697504540 has 24 divisors (see below), whose sum is σ = 1468176192. Its totient is φ = 278351040.

The previous prime is 697504519. The next prime is 697504541. The reversal of 697504540 is 45405796.

It is a super-2 number, since 2×697504540² = 973025166641223200, which contains 22 as substring.

It is a hoax number, since the sum of its digits (40) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 697504493 and 697504502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697504541) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 31839 + ... + 49078.

It is an arithmetic number, because the mean of its divisors is an integer number (61174008).

Almost surely, 2^697504540 is an apocalyptic number.

It is an amenable number.

697504540 is an abundant number, since it is smaller than the sum of its proper divisors (770671652).

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

697504540 is a wasteful number, since it uses less digits than its factorization.

697504540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 81357 (or 81355 counting only the distinct ones).

The product of its (nonzero) digits is 151200, while the sum is 40.

The square root of 697504540 is about 26410.3112439062. The cubic root of 697504540 is about 886.8476364428.

The spelling of 697504540 in words is "six hundred ninety-seven million, five hundred four thousand, five hundred forty".