158668257 has 8 divisors (see below), whose sum is σ = 230790240. Its totient is φ = 96162560.

The previous prime is 158668253. The next prime is 158668333. The reversal of 158668257 is 752866851.

158668257 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 158668257 - 2² = 158668253 is a prime.

It is not an unprimeable number, because it can be changed into a prime (158668253) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2404032 + ... + 2404097.

It is an arithmetic number, because the mean of its divisors is an integer number (28848780).

Almost surely, 2^158668257 is an apocalyptic number.

It is an amenable number.

158668257 is a deficient number, since it is larger than the sum of its proper divisors (72121983).

158668257 is a wasteful number, since it uses less digits than its factorization.

158668257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4808143.

The product of its digits is 806400, while the sum is 48.

The square root of 158668257 is about 12596.3588786601. The cubic root of 158668257 is about 541.3731138496.

The spelling of 158668257 in words is "one hundred fifty-eight million, six hundred sixty-eight thousand, two hundred fifty-seven".