64882620 has 180 divisors, whose sum is σ = 224400792. Its totient is φ = 15681600.

The previous prime is 64882583. The next prime is 64882633. The reversal of 64882620 is 2628846.

64882620 is a `hidden beast` number, since 648 + 8 + 2 + 6 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (180).

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 59 ways as a sum of consecutive naturals, for example, 195855 + ... + 196185.

Almost surely, 2^64882620 is an apocalyptic number.

64882620 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 64882620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (112200396).

64882620 is an abundant number, since it is smaller than the sum of its proper divisors (159518172).

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

64882620 is a wasteful number, since it uses less digits than its factorization.

64882620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 374 (or 352 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 64882620 is about 8054.9748602960. The cubic root of 64882620 is about 401.8304029531.

It can be divided in two parts, 648826 and 20, that added together give a palindrome (648846).

The spelling of 64882620 in words is "sixty-four million, eight hundred eighty-two thousand, six hundred twenty".