64542464 has 36 divisors (see below), whose sum is σ = 147241584. Its totient is φ = 27660288.

The previous prime is 64542463. The next prime is 64542503. The reversal of 64542464 is 46424546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64542461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 16217 + ... + 19800.

It is an arithmetic number, because the mean of its divisors is an integer number (4090044).

Almost surely, 2^64542464 is an apocalyptic number.

64542464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

64542464 is an abundant number, since it is smaller than the sum of its proper divisors (82699120).

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

64542464 is an equidigital number, since it uses as much as digits as its factorization.

64542464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36040 (or 36026 counting only the distinct ones).

The product of its digits is 92160, while the sum is 35.

The square root of 64542464 is about 8033.8324602894. The cubic root of 64542464 is about 401.1269552810.

The spelling of 64542464 in words is "sixty-four million, five hundred forty-two thousand, four hundred sixty-four".