64635157 has 8 divisors (see below), whose sum is σ = 65268000. Its totient is φ = 64005264.

The previous prime is 64635133. The next prime is 64635163. The reversal of 64635157 is 75153646.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64635157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64635107) 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, 87094 + ... + 87832.

It is an arithmetic number, because the mean of its divisors is an integer number (8158500).

Almost surely, 2^64635157 is an apocalyptic number.

It is an amenable number.

64635157 is a deficient number, since it is larger than the sum of its proper divisors (632843).

64635157 is a wasteful number, since it uses less digits than its factorization.

64635157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1475.

The product of its digits is 75600, while the sum is 37.

The square root of 64635157 is about 8039.5993059356. The cubic root of 64635157 is about 401.3188902915.

The spelling of 64635157 in words is "sixty-four million, six hundred thirty-five thousand, one hundred fifty-seven".