64391151 has 16 divisors (see below), whose sum is σ = 94792320. Its totient is φ = 38553120.

The previous prime is 64391149. The next prime is 64391179. The reversal of 64391151 is 15119346.

It is not a de Polignac number, because 64391151 - 2¹ = 64391149 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64391111) 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, 9016 + ... + 14493.

It is an arithmetic number, because the mean of its divisors is an integer number (5924520).

Almost surely, 2^64391151 is an apocalyptic number.

64391151 is a deficient number, since it is larger than the sum of its proper divisors (30401169).

64391151 is a wasteful number, since it uses less digits than its factorization.

64391151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23606.

The product of its digits is 3240, while the sum is 30.

The square root of 64391151 is about 8024.4096979155. The cubic root of 64391151 is about 400.8132433841.

The spelling of 64391151 in words is "sixty-four million, three hundred ninety-one thousand, one hundred fifty-one".