660650764473 has 96 divisors (see below), whose sum is σ = 1185648189440. Its totient is φ = 345928112640.

The previous prime is 660650764427. The next prime is 660650764493. The reversal of 660650764473 is 374467056066.

660650764473 is a `hidden beast` number, since 6 + 6 + 0 + 6 + 507 + 64 + 4 + 73 = 666.

It is not a de Polignac number, because 660650764473 - 2²² = 660646570169 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (660650764493) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 100445361 + ... + 100451937.

Almost surely, 2^660650764473 is an apocalyptic number.

660650764473 is a gapful number since it is divisible by the number (63) formed by its first and last digit.

It is an amenable number.

660650764473 is a deficient number, since it is larger than the sum of its proper divisors (524997424967).

660650764473 is a wasteful number, since it uses less digits than its factorization.

660650764473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9347 (or 9344 counting only the distinct ones).

The product of its (nonzero) digits is 15240960, while the sum is 54.

The spelling of 660650764473 in words is "six hundred sixty billion, six hundred fifty million, seven hundred sixty-four thousand, four hundred seventy-three".