624480660 has 36 divisors (see below), whose sum is σ = 1894258548. Its totient is φ = 166528128.

The previous prime is 624480653. The next prime is 624480691. The reversal of 624480660 is 66084426.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 467078544 + 157402116 = 21612^2 + 12546^2 .

It is a tau number, because it is divible by the number of its divisors (36).

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 pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1734489 + ... + 1734848.

It is an arithmetic number, because the mean of its divisors is an integer number (52618293).

Almost surely, 2^624480660 is an apocalyptic number.

624480660 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

624480660 is an abundant number, since it is smaller than the sum of its proper divisors (1269777888).

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

624480660 is a wasteful number, since it uses less digits than its factorization.

624480660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3469352 (or 3469347 counting only the distinct ones).

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

The square root of 624480660 is about 24989.6110413908. The cubic root of 624480660 is about 854.7510920057.

The spelling of 624480660 in words is "six hundred twenty-four million, four hundred eighty thousand, six hundred sixty".