64492560 has 240 divisors, whose sum is σ = 250698240. Its totient is φ = 14684160.

The previous prime is 64492559. The next prime is 64492567. The reversal of 64492560 is 6529446.

64492560 is a `hidden beast` number, since 6 + 4 + 4 + 92 + 560 = 666.

It is a tau number, because it is divible by the number of its divisors (240).

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

It is not an unprimeable number, because it can be changed into a prime (64492567) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 134401 + ... + 134879.

It is an arithmetic number, because the mean of its divisors is an integer number (1044576).

Almost surely, 2^64492560 is an apocalyptic number.

64492560 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 64492560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (125349120).

64492560 is an abundant number, since it is smaller than the sum of its proper divisors (186205680).

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

64492560 is a wasteful number, since it uses less digits than its factorization.

64492560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 526 (or 517 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 36.

The square root of 64492560 is about 8030.7259945786. The cubic root of 64492560 is about 401.0235453201.

It can be divided in two parts, 6449 and 2560, that added together give a palindrome (9009).

The spelling of 64492560 in words is "sixty-four million, four hundred ninety-two thousand, five hundred sixty".