64454880 has 96 divisors (see below), whose sum is σ = 232049664. Its totient is φ = 14731776.

The previous prime is 64454879. The next prime is 64454899. The reversal of 64454880 is 8845446.

It is a tau number, because it is divible by the number of its divisors (96).

It is a hoax number, since the sum of its digits (39) coincides with the sum of the digits of its distinct prime factors.

It is a congruent 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, 6232 + ... + 12951.

It is an arithmetic number, because the mean of its divisors is an integer number (2417184).

Almost surely, 2^64454880 is an apocalyptic number.

64454880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64454880 is an abundant number, since it is smaller than the sum of its proper divisors (167594784).

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

64454880 is a wasteful number, since it uses less digits than its factorization.

64454880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19208 (or 19200 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 39.

The square root of 64454880 is about 8028.3796621734. The cubic root of 64454880 is about 400.9454303099.

It can be divided in two parts, 6445 and 4880, that added together give a triangular number (11325 = T₁₅₀).

The spelling of 64454880 in words is "sixty-four million, four hundred fifty-four thousand, eight hundred eighty".