64836388 has 6 divisors (see below), whose sum is σ = 113463686. Its totient is φ = 32418192.

The previous prime is 64836377. The next prime is 64836391. The reversal of 64836388 is 88363846.

It can be written as a sum of positive squares in only one way, i.e., 63872064 + 964324 = 7992^2 + 982^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8104545 + ... + 8104552.

Almost surely, 2^64836388 is an apocalyptic number.

It is an amenable number.

64836388 is a deficient number, since it is larger than the sum of its proper divisors (48627298).

64836388 is a wasteful number, since it uses less digits than its factorization.

64836388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16209101 (or 16209099 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The square root of 64836388 is about 8052.1045696141. The cubic root of 64836388 is about 401.7349390864.

The spelling of 64836388 in words is "sixty-four million, eight hundred thirty-six thousand, three hundred eighty-eight".