64542875 has 16 divisors (see below), whose sum is σ = 81533088. Its totient is φ = 51004000.

The previous prime is 64542869. The next prime is 64542887. The reversal of 64542875 is 57824546.

It is not a de Polignac number, because 64542875 - 2⁶ = 64542811 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7265 + ... + 13485.

It is an arithmetic number, because the mean of its divisors is an integer number (5095818).

Almost surely, 2^64542875 is an apocalyptic number.

64542875 is a deficient number, since it is larger than the sum of its proper divisors (16990213).

64542875 is an equidigital number, since it uses as much as digits as its factorization.

64542875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6319 (or 6309 counting only the distinct ones).

The product of its digits is 268800, while the sum is 41.

The square root of 64542875 is about 8033.8580395723. The cubic root of 64542875 is about 401.1278067247.

The spelling of 64542875 in words is "sixty-four million, five hundred forty-two thousand, eight hundred seventy-five".