696542157 has 12 divisors (see below), whose sum is σ = 1016079324. Its totient is φ = 459763200.

The previous prime is 696542149. The next prime is 696542179. The reversal of 696542157 is 751245696.

696542157 is a `hidden beast` number, since 6 + 96 + 542 + 15 + 7 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 546577641 + 149964516 = 23379^2 + 12246^2 .

It is not a de Polignac number, because 696542157 - 2³ = 696542149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696540157) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 382228 + ... + 384045.

It is an arithmetic number, because the mean of its divisors is an integer number (84673277).

Almost surely, 2^696542157 is an apocalyptic number.

It is an amenable number.

696542157 is a deficient number, since it is larger than the sum of its proper divisors (319537167).

696542157 is a wasteful number, since it uses less digits than its factorization.

696542157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 766380 (or 766377 counting only the distinct ones).

The product of its digits is 453600, while the sum is 45.

The square root of 696542157 is about 26392.0851203538. The cubic root of 696542157 is about 886.4395722298.

The spelling of 696542157 in words is "six hundred ninety-six million, five hundred forty-two thousand, one hundred fifty-seven".