665613480 has 64 divisors (see below), whose sum is σ = 2282106240. Its totient is φ = 152140032.

The previous prime is 665613479. The next prime is 665613497. The reversal of 665613480 is 84316566.

665613480 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 395359 + ... + 397038.

It is an arithmetic number, because the mean of its divisors is an integer number (35657910).

Almost surely, 2^665613480 is an apocalyptic number.

665613480 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

665613480 is an abundant number, since it is smaller than the sum of its proper divisors (1616492760).

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

665613480 is a wasteful number, since it uses less digits than its factorization.

665613480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792418 (or 792414 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 39.

The square root of 665613480 is about 25799.4860413924. The cubic root of 665613480 is about 873.1202006303.

The spelling of 665613480 in words is "six hundred sixty-five million, six hundred thirteen thousand, four hundred eighty".