64628460 has 144 divisors (see below), whose sum is σ = 214643520. Its totient is φ = 15644160.

The previous prime is 64628449. The next prime is 64628471. The reversal of 64628460 is 6482646.

It is a happy number.

64628460 is a `hidden beast` number, since 646 + 2 + 8 + 4 + 6 + 0 = 666.

It is an interprime number because it is at equal distance from previous prime (64628449) and next prime (64628471).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 165946 + ... + 166334.

It is an arithmetic number, because the mean of its divisors is an integer number (1490580).

Almost surely, 2^64628460 is an apocalyptic number.

64628460 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 64628460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107321760).

64628460 is an abundant number, since it is smaller than the sum of its proper divisors (150015060).

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

64628460 is a wasteful number, since it uses less digits than its factorization.

64628460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 483 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 64628460 is about 8039.1827942895. The cubic root of 64628460 is about 401.3050292827.

The spelling of 64628460 in words is "sixty-four million, six hundred twenty-eight thousand, four hundred sixty".