697256747 has 4 divisors (see below), whose sum is σ = 760643736. Its totient is φ = 633869760.

The previous prime is 697256741. The next prime is 697256789. The reversal of 697256747 is 747652796.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 697256747 - 2²⁶ = 630147883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (697256741) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 31693478 + ... + 31693499.

It is an arithmetic number, because the mean of its divisors is an integer number (190160934).

Almost surely, 2^697256747 is an apocalyptic number.

697256747 is a deficient number, since it is larger than the sum of its proper divisors (63386989).

697256747 is a wasteful number, since it uses less digits than its factorization.

697256747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63386988.

The product of its digits is 4445280, while the sum is 53.

The square root of 697256747 is about 26405.6196102269. The cubic root of 697256747 is about 886.7426045508.

The spelling of 697256747 in words is "six hundred ninety-seven million, two hundred fifty-six thousand, seven hundred forty-seven".