64602720 has 576 divisors, whose sum is σ = 297198720. Its totient is φ = 12386304.

The previous prime is 64602719. The next prime is 64602739. The reversal of 64602720 is 2720646.

It is a super-2 number, since 2×64602720² = 8347022862796800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 2227666 + ... + 2227694.

It is an arithmetic number, because the mean of its divisors is an integer number (515970).

Almost surely, 2^64602720 is an apocalyptic number.

64602720 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 64602720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (148599360).

64602720 is an abundant number, since it is smaller than the sum of its proper divisors (232596000).

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

64602720 is a wasteful number, since it uses less digits than its factorization.

64602720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87 (or 76 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 27.

The square root of 64602720 is about 8037.5817258676. The cubic root of 64602720 is about 401.2517454141.

It can be divided in two parts, 6460 and 2720, that added together give a triangular number (9180 = T₁₃₅).

The spelling of 64602720 in words is "sixty-four million, six hundred two thousand, seven hundred twenty".