64376633 has 12 divisors (see below), whose sum is σ = 67761828. Its totient is φ = 61115040.

The previous prime is 64376629. The next prime is 64376639. The reversal of 64376633 is 33667346.

It can be written as a sum of positive squares in 2 ways, for example, as 49730704 + 14645929 = 7052^2 + 3827^2 .

It is not a de Polignac number, because 64376633 - 2² = 64376629 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (64376639) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 67943 + ... + 68883.

It is an arithmetic number, because the mean of its divisors is an integer number (5646819).

Almost surely, 2^64376633 is an apocalyptic number.

It is an amenable number.

64376633 is a deficient number, since it is larger than the sum of its proper divisors (3385195).

64376633 is an equidigital number, since it uses as much as digits as its factorization.

64376633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1064 (or 1021 counting only the distinct ones).

The product of its digits is 163296, while the sum is 38.

The square root of 64376633 is about 8023.5050320916. The cubic root of 64376633 is about 400.7831178987.

The spelling of 64376633 in words is "sixty-four million, three hundred seventy-six thousand, six hundred thirty-three".