64137652 has 6 divisors (see below), whose sum is σ = 112240898. Its totient is φ = 32068824.

The previous prime is 64137643. The next prime is 64137683. The reversal of 64137652 is 25673146.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 64096036 + 41616 = 8006^2 + 204^2 .

It is a super-2 number, since 2×64137652² = 8227276808146208, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8017203 + ... + 8017210.

Almost surely, 2^64137652 is an apocalyptic number.

It is an amenable number.

64137652 is a deficient number, since it is larger than the sum of its proper divisors (48103246).

64137652 is a wasteful number, since it uses less digits than its factorization.

64137652 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16034417 (or 16034415 counting only the distinct ones).

The product of its digits is 30240, while the sum is 34.

The square root of 64137652 is about 8008.5986289737. The cubic root of 64137652 is about 400.2865696456.

The spelling of 64137652 in words is "sixty-four million, one hundred thirty-seven thousand, six hundred fifty-two".