697107409920 has 440 divisors, whose sum is σ = 2629544266800. Its totient is φ = 176109355008.

The previous prime is 697107409871. The next prime is 697107409949. The reversal of 697107409920 is 29904701796.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

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 39 ways as a sum of consecutive naturals, for example, 7835446 + ... + 7923914.

It is an arithmetic number, because the mean of its divisors is an integer number (5976236970).

Almost surely, 2^697107409920 is an apocalyptic number.

697107409920 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 697107409920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1314772133400).

697107409920 is an abundant number, since it is smaller than the sum of its proper divisors (1932436856880).

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

697107409920 is a wasteful number, since it uses less digits than its factorization.

697107409920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88525 (or 88498 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 54.

The spelling of 697107409920 in words is "six hundred ninety-seven billion, one hundred seven million, four hundred nine thousand, nine hundred twenty".