696138720 has 192 divisors, whose sum is σ = 2371783680. Its totient is φ = 171030528.

The previous prime is 696138719. The next prime is 696138721. The reversal of 696138720 is 27831696.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (696138719) and next prime (696138721).

It is a super-3 number, since 3×696138720³ (a number of 28 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696138721) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 336409 + ... + 338471.

It is an arithmetic number, because the mean of its divisors is an integer number (12353040).

Almost surely, 2^696138720 is an apocalyptic number.

696138720 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 696138720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1185891840).

696138720 is an abundant number, since it is smaller than the sum of its proper divisors (1675644960).

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

696138720 is a wasteful number, since it uses less digits than its factorization.

696138720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2137 (or 2129 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 42.

The square root of 696138720 is about 26384.4408695731. The cubic root of 696138720 is about 886.2683973362.

The spelling of 696138720 in words is "six hundred ninety-six million, one hundred thirty-eight thousand, seven hundred twenty".