697399520 has 24 divisors (see below), whose sum is σ = 1647606744. Its totient is φ = 278959744.

The previous prime is 697399513. The next prime is 697399553. The reversal of 697399520 is 25993796.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2179214 + ... + 2179533.

It is an arithmetic number, because the mean of its divisors is an integer number (68650281).

Almost surely, 2^697399520 is an apocalyptic number.

It is an amenable number.

697399520 is an abundant number, since it is smaller than the sum of its proper divisors (950207224).

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

697399520 is a wasteful number, since it uses less digits than its factorization.

697399520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4358762 (or 4358754 counting only the distinct ones).

The product of its (nonzero) digits is 918540, while the sum is 50.

The square root of 697399520 is about 26408.3229304702. The cubic root of 697399520 is about 886.8031247069.

The spelling of 697399520 in words is "six hundred ninety-seven million, three hundred ninety-nine thousand, five hundred twenty".