64179140 has 12 divisors (see below), whose sum is σ = 134776236. Its totient is φ = 25671648.

The previous prime is 64179121. The next prime is 64179163. The reversal of 64179140 is 4197146.

64179140 is digitally balanced in base 9, 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 2 ways, for example, as 21381376 + 42797764 = 4624^2 + 6542^2 .

It is a super-2 number, since 2×64179140² = 8237924022279200, which contains 22 as substring.

64179140 is strictly pandigital in base 9.

It is a junction number, because it is equal to n+sod(n) for n = 64179097 and 64179106.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1604459 + ... + 1604498.

It is an arithmetic number, because the mean of its divisors is an integer number (11231353).

Almost surely, 2^64179140 is an apocalyptic number.

It is an amenable number.

64179140 is an abundant number, since it is smaller than the sum of its proper divisors (70597096).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64179140 is a wasteful number, since it uses less digits than its factorization.

64179140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3208966 (or 3208964 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 32.

The square root of 64179140 is about 8011.1884261950. The cubic root of 64179140 is about 400.3728606627.

The spelling of 64179140 in words is "sixty-four million, one hundred seventy-nine thousand, one hundred forty".