64336136 has 8 divisors (see below), whose sum is σ = 120630270. Its totient is φ = 32168064.

The previous prime is 64336087. The next prime is 64336157. The reversal of 64336136 is 63163346.

It can be written as a sum of positive squares in only one way, i.e., 64096036 + 240100 = 8006^2 + 490^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4021001 + ... + 4021016.

Almost surely, 2^64336136 is an apocalyptic number.

It is an amenable number.

64336136 is a deficient number, since it is larger than the sum of its proper divisors (56294134).

64336136 is a wasteful number, since it uses less digits than its factorization.

64336136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8042023 (or 8042019 counting only the distinct ones).

The product of its digits is 23328, while the sum is 32.

The square root of 64336136 is about 8020.9809873855. The cubic root of 64336136 is about 400.6990609062.

The spelling of 64336136 in words is "sixty-four million, three hundred thirty-six thousand, one hundred thirty-six".