157870647 has 16 divisors (see below), whose sum is σ = 255144960. Its totient is φ = 95679000.

The previous prime is 157870633. The next prime is 157870649. The reversal of 157870647 is 746078751.

157870647 is a `hidden beast` number, since 1 + 578 + 70 + 6 + 4 + 7 = 666.

It is not a de Polignac number, because 157870647 - 2²⁷ = 23652919 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (157870649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 265479 + ... + 266072.

It is an arithmetic number, because the mean of its divisors is an integer number (15946560).

Almost surely, 2^157870647 is an apocalyptic number.

157870647 is a deficient number, since it is larger than the sum of its proper divisors (97274313).

157870647 is a wasteful number, since it uses less digits than its factorization.

157870647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531571 (or 531565 counting only the distinct ones).

The product of its (nonzero) digits is 329280, while the sum is 45.

The square root of 157870647 is about 12564.6586503574. The cubic root of 157870647 is about 540.4644461012.

The spelling of 157870647 in words is "one hundred fifty-seven million, eight hundred seventy thousand, six hundred forty-seven".