697740 has 48 divisors (see below), whose sum is σ = 2026080. Its totient is φ = 179200.

The previous prime is 697733. The next prime is 697757. The reversal of 697740 is 47796.

It is a super-2 number, since 2×697740² = 973682215200, which contains 22 as substring.

It is a nialpdrome in base 15.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 697740.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1540 + ... + 1940.

It is an arithmetic number, because the mean of its divisors is an integer number (42210).

2⁶⁹⁷⁷⁴⁰ is an apocalyptic number.

697740 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 697740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1013040).

697740 is an abundant number, since it is smaller than the sum of its proper divisors (1328340).

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

697740 is a wasteful number, since it uses less digits than its factorization.

697740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442 (or 440 counting only the distinct ones).

The product of its (nonzero) digits is 10584, while the sum is 33.

The square root of 697740 is about 835.3083263083. The cubic root of 697740 is about 88.6947417706.

The spelling of 697740 in words is "six hundred ninety-seven thousand, seven hundred forty".