64001236 has 24 divisors (see below), whose sum is σ = 124511744. Its totient is φ = 28585440.

The previous prime is 64001233. The next prime is 64001237. The reversal of 64001236 is 63210046.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64001233) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18240 + ... + 21463.

Almost surely, 2^64001236 is an apocalyptic number.

It is an amenable number.

64001236 is a deficient number, since it is larger than the sum of its proper divisors (60510508).

64001236 is a wasteful number, since it uses less digits than its factorization.

64001236 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39751 (or 39749 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 64001236 is about 8000.0772496270. The cubic root of 64001236 is about 400.0025749834.

The spelling of 64001236 in words is "sixty-four million, one thousand, two hundred thirty-six".