64153857 has 4 divisors (see below), whose sum is σ = 85538480. Its totient is φ = 42769236.

The previous prime is 64153847. The next prime is 64153891. The reversal of 64153857 is 75835146.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 64153857 - 2⁴ = 64153841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64153847) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10692307 + ... + 10692312.

It is an arithmetic number, because the mean of its divisors is an integer number (21384620).

Almost surely, 2^64153857 is an apocalyptic number.

It is an amenable number.

64153857 is a deficient number, since it is larger than the sum of its proper divisors (21384623).

64153857 is a wasteful number, since it uses less digits than its factorization.

64153857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21384622.

The product of its digits is 100800, while the sum is 39.

The square root of 64153857 is about 8009.6102901452. The cubic root of 64153857 is about 400.3202789018.

The spelling of 64153857 in words is "sixty-four million, one hundred fifty-three thousand, eight hundred fifty-seven".