64495800 has 72 divisors (see below), whose sum is σ = 216604440. Its totient is φ = 17198400.

The previous prime is 64495793. The next prime is 64495817. The reversal of 64495800 is 859446.

64495800 is a `hidden beast` number, since 644 + 9 + 5 + 8 + 0 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (72).

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 pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 16116 + ... + 19715.

It is an arithmetic number, because the mean of its divisors is an integer number (3008395).

Almost surely, 2^64495800 is an apocalyptic number.

64495800 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

64495800 is an abundant number, since it is smaller than the sum of its proper divisors (152108640).

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

64495800 is a wasteful number, since it uses less digits than its factorization.

64495800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35853 (or 35841 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 64495800 is about 8030.9277172690. The cubic root of 64495800 is about 401.0302607952.

The spelling of 64495800 in words is "sixty-four million, four hundred ninety-five thousand, eight hundred".