660062880 has 72 divisors (see below), whose sum is σ = 2252469492. Its totient is φ = 176016384.

The previous prime is 660062873. The next prime is 660062891. The reversal of 660062880 is 88260066.

It can be written as a sum of positive squares in 2 ways, for example, as 641710224 + 18352656 = 25332^2 + 4284^2 .

It is a tau number, because it is divible by the number of its divisors (72).

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 11 ways as a sum of consecutive naturals, for example, 227749 + ... + 230628.

Almost surely, 2^660062880 is an apocalyptic number.

660062880 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

660062880 is an abundant number, since it is smaller than the sum of its proper divisors (1592406612).

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

660062880 is a wasteful number, since it uses less digits than its factorization.

660062880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458398 (or 458387 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 36.

The square root of 660062880 is about 25691.6889285232. The cubic root of 660062880 is about 870.6864182511.

It can be divided in two parts, 66006 and 2880, that added together give a palindrome (68886).

The spelling of 660062880 in words is "six hundred sixty million, sixty-two thousand, eight hundred eighty".