64986380 has 24 divisors (see below), whose sum is σ = 137295648. Its totient is φ = 25837568.

The previous prime is 64986379. The next prime is 64986443. The reversal of 64986380 is 8368946.

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, 6389 + ... + 13068.

It is an arithmetic number, because the mean of its divisors is an integer number (5720652).

Almost surely, 2^64986380 is an apocalyptic number.

It is an amenable number.

64986380 is an abundant number, since it is smaller than the sum of its proper divisors (72309268).

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

64986380 is a wasteful number, since it uses less digits than its factorization.

64986380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19633 (or 19631 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 44.

The square root of 64986380 is about 8061.4130275033. The cubic root of 64986380 is about 402.0444906742.

The spelling of 64986380 in words is "sixty-four million, nine hundred eighty-six thousand, three hundred eighty".