64852920 has 256 divisors, whose sum is σ = 242611200. Its totient is φ = 15275520.

The previous prime is 64852877. The next prime is 64852933. The reversal of 64852920 is 2925846.

It is a happy number.

64852920 is a `hidden beast` number, since 648 + 5 + 2 + 9 + 2 + 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 63 ways as a sum of consecutive naturals, for example, 629589 + ... + 629691.

It is an arithmetic number, because the mean of its divisors is an integer number (947700).

Almost surely, 2^64852920 is an apocalyptic number.

64852920 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 64852920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (121305600).

64852920 is an abundant number, since it is smaller than the sum of its proper divisors (177758280).

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

64852920 is a wasteful number, since it uses less digits than its factorization.

64852920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 187 (or 177 counting only the distinct ones).

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

The square root of 64852920 is about 8053.1310681002. The cubic root of 64852920 is about 401.7690810130.

The spelling of 64852920 in words is "sixty-four million, eight hundred fifty-two thousand, nine hundred twenty".