64133157 has 8 divisors (see below), whose sum is σ = 93284640. Its totient is φ = 38868560.

The previous prime is 64133149. The next prime is 64133159. The reversal of 64133157 is 75133146.

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 64133157 - 2³ = 64133149 is a prime.

It is a super-2 number, since 2×64133157² = 8226123653573298, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64133159) 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, 971682 + ... + 971747.

It is an arithmetic number, because the mean of its divisors is an integer number (11660580).

Almost surely, 2^64133157 is an apocalyptic number.

It is an amenable number.

64133157 is a deficient number, since it is larger than the sum of its proper divisors (29151483).

64133157 is a wasteful number, since it uses less digits than its factorization.

64133157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1943443.

The product of its digits is 7560, while the sum is 30.

The square root of 64133157 is about 8008.3179881920. The cubic root of 64133157 is about 400.2772182474.

The spelling of 64133157 in words is "sixty-four million, one hundred thirty-three thousand, one hundred fifty-seven".