697488561 has 48 divisors (see below), whose sum is σ = 1296642048. Its totient is φ = 350632800.

The previous prime is 697488553. The next prime is 697488569. The reversal of 697488561 is 165884796.

697488561 is a `hidden beast` number, since 6 + 9 + 74 + 8 + 8 + 561 = 666.

It is an interprime number because it is at equal distance from previous prime (697488553) and next prime (697488569).

It is not a de Polignac number, because 697488561 - 2³ = 697488553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 697488498 and 697488507.

It is not an unprimeable number, because it can be changed into a prime (697488569) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5250 + ... + 37716.

It is an arithmetic number, because the mean of its divisors is an integer number (27013376).

Almost surely, 2^697488561 is an apocalyptic number.

It is an amenable number.

697488561 is a deficient number, since it is larger than the sum of its proper divisors (599153487).

697488561 is a wasteful number, since it uses less digits than its factorization.

697488561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32522 (or 32519 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 697488561 is about 26410.0087277532. The cubic root of 697488561 is about 886.8408641826.

The spelling of 697488561 in words is "six hundred ninety-seven million, four hundred eighty-eight thousand, five hundred sixty-one".