64495500 has 192 divisors, whose sum is σ = 206868480. Its totient is φ = 15552000.

The previous prime is 64495493. The next prime is 64495513. The reversal of 64495500 is 559446.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 883464 + ... + 883536.

It is an arithmetic number, because the mean of its divisors is an integer number (1077440).

Almost surely, 2^64495500 is an apocalyptic number.

64495500 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 64495500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103434240).

64495500 is an abundant number, since it is smaller than the sum of its proper divisors (142372980).

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

64495500 is a wasteful number, since it uses less digits than its factorization.

64495500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 133 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 64495500 is about 8030.9090394550. The cubic root of 64495500 is about 401.0296390014.

The spelling of 64495500 in words is "sixty-four million, four hundred ninety-five thousand, five hundred".