64838632 has 8 divisors (see below), whose sum is σ = 121572450. Its totient is φ = 32419312.

The previous prime is 64838611. The next prime is 64838681. The reversal of 64838632 is 23683846.

It can be written as a sum of positive squares in only one way, i.e., 63266116 + 1572516 = 7954^2 + 1254^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4052407 + ... + 4052422.

Almost surely, 2^64838632 is an apocalyptic number.

It is an amenable number.

64838632 is a deficient number, since it is larger than the sum of its proper divisors (56733818).

64838632 is a wasteful number, since it uses less digits than its factorization.

64838632 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8104835 (or 8104831 counting only the distinct ones).

The product of its digits is 165888, while the sum is 40.

The square root of 64838632 is about 8052.2439108611. The cubic root of 64838632 is about 401.7395737410.

The spelling of 64838632 in words is "sixty-four million, eight hundred thirty-eight thousand, six hundred thirty-two".