64880075 has 24 divisors (see below), whose sum is σ = 91744128. Its totient is φ = 45089280.

The previous prime is 64880059. The next prime is 64880083. The reversal of 64880075 is 57008846.

It is not a de Polignac number, because 64880075 - 2⁴ = 64880059 is a prime.

It is a Smith number, since the sum of its digits (38) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 347 + ... + 11396.

It is an arithmetic number, because the mean of its divisors is an integer number (3822672).

Almost surely, 2^64880075 is an apocalyptic number.

64880075 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

64880075 is a deficient number, since it is larger than the sum of its proper divisors (26864053).

64880075 is a wasteful number, since it uses less digits than its factorization.

64880075 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11783 (or 11778 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 38.

The square root of 64880075 is about 8054.8168818416. The cubic root of 64880075 is about 401.8251489948.

The spelling of 64880075 in words is "sixty-four million, eight hundred eighty thousand, seventy-five".