64136 has 8 divisors (see below), whose sum is σ = 120270. Its totient is φ = 32064.

The previous prime is 64123. The next prime is 64151. The reversal of 64136 is 63146.

64136 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 52900 + 11236 = 230^2 + 106^2 .

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

It is a super-2 number, since 2×64136² = 8226852992, which contains 22 as substring.

It is a nialpdrome in base 16.

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, 4001 + ... + 4016.

2⁶⁴¹³⁶ is an apocalyptic number.

It is an amenable number.

64136 is a deficient number, since it is larger than the sum of its proper divisors (56134).

64136 is a wasteful number, since it uses less digits than its factorization.

64136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8023 (or 8019 counting only the distinct ones).

The product of its digits is 432, while the sum is 20.

The square root of 64136 is about 253.2508637695. The cubic root of 64136 is about 40.0283132875.

Subtracting from 64136 its reverse (63146), we obtain a triangular number (990 = T₄₄).

The spelling of 64136 in words is "sixty-four thousand, one hundred thirty-six".