696944537 has 2 divisors, whose sum is σ = 696944538. Its totient is φ = 696944536.

The previous prime is 696944533. The next prime is 696944569. The reversal of 696944537 is 735449696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 687278656 + 9665881 = 26216^2 + 3109^2 .

It is a cyclic number.

It is not a de Polignac number, because 696944537 - 2² = 696944533 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (696944531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348472268 + 348472269.

It is an arithmetic number, because the mean of its divisors is an integer number (348472269).

Almost surely, 2^696944537 is an apocalyptic number.

It is an amenable number.

696944537 is a deficient number, since it is larger than the sum of its proper divisors (1).

696944537 is an equidigital number, since it uses as much as digits as its factorization.

696944537 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4898880, while the sum is 53.

The square root of 696944537 is about 26399.7071385271. The cubic root of 696944537 is about 886.6102328232.

The spelling of 696944537 in words is "six hundred ninety-six million, nine hundred forty-four thousand, five hundred thirty-seven".