697940571 has 4 divisors (see below), whose sum is σ = 930587432. Its totient is φ = 465293712.

The previous prime is 697940539. The next prime is 697940587. The reversal of 697940571 is 175049796.

It is a happy number.

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

It is not a de Polignac number, because 697940571 - 2⁵ = 697940539 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 697940571.

It is not an unprimeable number, because it can be changed into a prime (697940531) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 116323426 + ... + 116323431.

It is an arithmetic number, because the mean of its divisors is an integer number (232646858).

Almost surely, 2^697940571 is an apocalyptic number.

697940571 is a deficient number, since it is larger than the sum of its proper divisors (232646861).

697940571 is a wasteful number, since it uses less digits than its factorization.

697940571 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 232646860.

The product of its (nonzero) digits is 476280, while the sum is 48.

The square root of 697940571 is about 26418.5648928930. The cubic root of 697940571 is about 887.0323962973.

The spelling of 697940571 in words is "six hundred ninety-seven million, nine hundred forty thousand, five hundred seventy-one".