64495260 has 72 divisors (see below), whose sum is σ = 198984240. Its totient is φ = 16904448.

The previous prime is 64495259. The next prime is 64495279. The reversal of 64495260 is 6259446.

64495260 is a `hidden beast` number, since 644 + 9 + 5 + 2 + 6 + 0 = 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 23 ways as a sum of consecutive naturals, for example, 7584 + ... + 13656.

It is an arithmetic number, because the mean of its divisors is an integer number (2763670).

Almost surely, 2^64495260 is an apocalyptic number.

64495260 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 64495260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (99492120).

64495260 is an abundant number, since it is smaller than the sum of its proper divisors (134488980).

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

64495260 is a wasteful number, since it uses less digits than its factorization.

64495260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6147 (or 6142 counting only the distinct ones).

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

The square root of 64495260 is about 8030.8940971725. The cubic root of 64495260 is about 401.0291415649.

The spelling of 64495260 in words is "sixty-four million, four hundred ninety-five thousand, two hundred sixty".