157664089 has 6 divisors (see below), whose sum is σ = 173300330. Its totient is φ = 143330880.

The previous prime is 157664081. The next prime is 157664099. The reversal of 157664089 is 980466751.

157664089 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 153958464 + 3705625 = 12408^2 + 1925^2 .

It is not a de Polignac number, because 157664089 - 2³ = 157664081 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (157664081) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 651384 + ... + 651625.

Almost surely, 2^157664089 is an apocalyptic number.

It is an amenable number.

157664089 is a deficient number, since it is larger than the sum of its proper divisors (15636241).

157664089 is a wasteful number, since it uses less digits than its factorization.

157664089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303031 (or 1303020 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 46.

The square root of 157664089 is about 12556.4361584010. The cubic root of 157664089 is about 540.2286286111.

The spelling of 157664089 in words is "one hundred fifty-seven million, six hundred sixty-four thousand, eighty-nine".