64108140 has 24 divisors (see below), whose sum is σ = 179502960. Its totient is φ = 17095488.

The previous prime is 64108129. The next prime is 64108181. The reversal of 64108140 is 4180146.

It is a super-2 number, since 2×64108140² = 8219707228519200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 64108140.

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, 534175 + ... + 534294.

It is an arithmetic number, because the mean of its divisors is an integer number (7479290).

Almost surely, 2^64108140 is an apocalyptic number.

64108140 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64108140 is an abundant number, since it is smaller than the sum of its proper divisors (115394820).

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

64108140 is a wasteful number, since it uses less digits than its factorization.

64108140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068481 (or 1068479 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 24.

The square root of 64108140 is about 8006.7558973657. The cubic root of 64108140 is about 400.2251648948.

Adding to 64108140 its reverse (4180146), we get a palindrome (68288286).

The spelling of 64108140 in words is "sixty-four million, one hundred eight thousand, one hundred forty".