64884136 has 32 divisors (see below), whose sum is σ = 126765000. Its totient is φ = 31096576.

The previous prime is 64884097. The next prime is 64884151. The reversal of 64884136 is 63148846.

It can be written as a sum of positive squares in 4 ways, for example, as 48024900 + 16859236 = 6930^2 + 4106^2 .

It is a super-2 number, since 2×64884136² = 8419902208932992, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33630 + ... + 35506.

Almost surely, 2^64884136 is an apocalyptic number.

It is an amenable number.

64884136 is a deficient number, since it is larger than the sum of its proper divisors (61880864).

64884136 is a wasteful number, since it uses less digits than its factorization.

64884136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2061 (or 2057 counting only the distinct ones).

The product of its digits is 110592, while the sum is 40.

The square root of 64884136 is about 8055.0689630816. The cubic root of 64884136 is about 401.8335325542.

The spelling of 64884136 in words is "sixty-four million, eight hundred eighty-four thousand, one hundred thirty-six".