697961357 has 4 divisors (see below), whose sum is σ = 722029020. Its totient is φ = 673893696.

The previous prime is 697961353. The next prime is 697961387. The reversal of 697961357 is 753169796.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 584624041 + 113337316 = 24179^2 + 10646^2 .

It is a cyclic number.

It is not a de Polignac number, because 697961357 - 2² = 697961353 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 697961299 and 697961308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (697961351) 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, 12033788 + ... + 12033845.

It is an arithmetic number, because the mean of its divisors is an integer number (180507255).

Almost surely, 2^697961357 is an apocalyptic number.

It is an amenable number.

697961357 is a deficient number, since it is larger than the sum of its proper divisors (24067663).

697961357 is a wasteful number, since it uses less digits than its factorization.

697961357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24067662.

The product of its digits is 2143260, while the sum is 53.

The square root of 697961357 is about 26418.9582875631. The cubic root of 697961357 is about 887.0412020481.

The spelling of 697961357 in words is "six hundred ninety-seven million, nine hundred sixty-one thousand, three hundred fifty-seven".