64424880 has 120 divisors (see below), whose sum is σ = 233037168. Its totient is φ = 15856128.

The previous prime is 64424869. The next prime is 64424891. The reversal of 64424880 is 8842446.

64424880 is a `hidden beast` number, since 644 + 2 + 4 + 8 + 8 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (64424869) and next prime (64424891).

It is a tau number, because it is divible by the number of its divisors (120).

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

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, 5919 + ... + 12801.

Almost surely, 2^64424880 is an apocalyptic number.

64424880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 64424880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116518584).

64424880 is an abundant number, since it is smaller than the sum of its proper divisors (168612288).

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

64424880 is a wasteful number, since it uses less digits than its factorization.

64424880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6915 (or 6906 counting only the distinct ones).

The product of its (nonzero) digits is 49152, while the sum is 36.

The square root of 64424880 is about 8026.5110726891. The cubic root of 64424880 is about 400.8832150592.

The spelling of 64424880 in words is "sixty-four million, four hundred twenty-four thousand, eight hundred eighty".