697620 has 96 divisors (see below), whose sum is σ = 2451456. Its totient is φ = 144000.

The previous prime is 697603. The next prime is 697637. The reversal of 697620 is 26796.

It is an interprime number because it is at equal distance from previous prime (697603) and next prime (697637).

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a nialpdrome in base 15.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697620.

It is an unprimeable number.

697620 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 4545 + ... + 4695.

It is an arithmetic number, because the mean of its divisors is an integer number (25536).

2⁶⁹⁷⁶²⁰ is an apocalyptic number.

697620 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 697620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1225728).

697620 is an abundant number, since it is smaller than the sum of its proper divisors (1753836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

697620 is a wasteful number, since it uses less digits than its factorization.

697620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 181 (or 179 counting only the distinct ones).

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 697620 is about 835.2364934556. The cubic root of 697620 is about 88.6896567918.

It can be divided in two parts, 6976 and 20, that added together give a palindrome (6996).

The spelling of 697620 in words is "six hundred ninety-seven thousand, six hundred twenty".