662666681760 has 48 divisors (see below), whose sum is σ = 2087400049056. Its totient is φ = 176711115008.

The previous prime is 662666681749. The next prime is 662666681819. The reversal of 662666681760 is 67186666266.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×662666681760² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 662666681694 and 662666681703.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 690277314 + ... + 690278273.

It is an arithmetic number, because the mean of its divisors is an integer number (43487501022).

Almost surely, 2^662666681760 is an apocalyptic number.

662666681760 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

662666681760 is an abundant number, since it is smaller than the sum of its proper divisors (1424733367296).

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

662666681760 is a wasteful number, since it uses less digits than its factorization.

662666681760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1380555605 (or 1380555597 counting only the distinct ones).

The product of its (nonzero) digits is 31352832, while the sum is 60.

The spelling of 662666681760 in words is "six hundred sixty-two billion, six hundred sixty-six million, six hundred eighty-one thousand, seven hundred sixty".