64044634 has 4 divisors (see below), whose sum is σ = 96066954. Its totient is φ = 32022316.

The previous prime is 64044613. The next prime is 64044637. The reversal of 64044634 is 43644046.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 43644046 = 2 ⋅21822023.

It can be written as a sum of positive squares in only one way, i.e., 63920025 + 124609 = 7995^2 + 353^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64044596 and 64044605.

It is not an unprimeable number, because it can be changed into a prime (64044637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16011157 + ... + 16011160.

Almost surely, 2^64044634 is an apocalyptic number.

64044634 is a deficient number, since it is larger than the sum of its proper divisors (32022320).

64044634 is a wasteful number, since it uses less digits than its factorization.

64044634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32022319.

The product of its (nonzero) digits is 27648, while the sum is 31.

The square root of 64044634 is about 8002.7891387940. The cubic root of 64044634 is about 400.0929658917.

The spelling of 64044634 in words is "sixty-four million, forty-four thousand, six hundred thirty-four".