64909080 has 64 divisors (see below), whose sum is σ = 216367200. Its totient is φ = 17308800.

The previous prime is 64909069. The next prime is 64909099. The reversal of 64909080 is 8090946.

64909080 is a `hidden beast` number, since 6 + 490 + 90 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

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, 28971 + ... + 31130.

Almost surely, 2^64909080 is an apocalyptic number.

64909080 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64909080 is an abundant number, since it is smaller than the sum of its proper divisors (151458120).

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

64909080 is a wasteful number, since it uses less digits than its factorization.

64909080 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60121 (or 60111 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 64909080 is about 8056.6171561022. The cubic root of 64909080 is about 401.8850194665.

The spelling of 64909080 in words is "sixty-four million, nine hundred nine thousand, eighty".