68157351 has 12 divisors (see below), whose sum is σ = 103631320. Its totient is φ = 43046640.

The previous prime is 68157347. The next prime is 68157391. The reversal of 68157351 is 15375186.

68157351 is a `hidden beast` number, since 6 + 81 + 573 + 5 + 1 = 666.

It is not a de Polignac number, because 68157351 - 2² = 68157347 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (68157391) 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, 199120 + ... + 199461.

Almost surely, 2^68157351 is an apocalyptic number.

68157351 is a deficient number, since it is larger than the sum of its proper divisors (35473969).

68157351 is a wasteful number, since it uses less digits than its factorization.

68157351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398606 (or 398603 counting only the distinct ones).

The product of its digits is 25200, while the sum is 36.

The square root of 68157351 is about 8255.7465440746. The cubic root of 68157351 is about 408.4800973291.

The spelling of 68157351 in words is "sixty-eight million, one hundred fifty-seven thousand, three hundred fifty-one".