64927380 has 48 divisors (see below), whose sum is σ = 207768960. Its totient is φ = 14840448.

The previous prime is 64927349. The next prime is 64927381. The reversal of 64927380 is 8372946.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64927381) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76875 + ... + 77714.

It is an arithmetic number, because the mean of its divisors is an integer number (4328520).

Almost surely, 2^64927380 is an apocalyptic number.

64927380 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64927380 is an abundant number, since it is smaller than the sum of its proper divisors (142841580).

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

64927380 is a wasteful number, since it uses less digits than its factorization.

64927380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154608 (or 154606 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 64927380 is about 8057.7527884640. The cubic root of 64927380 is about 401.9227841100.

The spelling of 64927380 in words is "sixty-four million, nine hundred twenty-seven thousand, three hundred eighty".