64513542 has 32 divisors (see below), whose sum is σ = 134129664. Its totient is φ = 20664000.

The previous prime is 64513517. The next prime is 64513549. The reversal of 64513542 is 24531546.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64513549) 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, 26938 + ... + 29234.

It is an arithmetic number, because the mean of its divisors is an integer number (4191552).

Almost surely, 2^64513542 is an apocalyptic number.

64513542 is a gapful number since it is divisible by the number (62) formed by its first and last digit.

64513542 is an abundant number, since it is smaller than the sum of its proper divisors (69616122).

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

64513542 is a wasteful number, since it uses less digits than its factorization.

64513542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2484.

The product of its digits is 14400, while the sum is 30.

The square root of 64513542 is about 8032.0322459512. The cubic root of 64513542 is about 401.0670302518.

The spelling of 64513542 in words is "sixty-four million, five hundred thirteen thousand, five hundred forty-two".