671796310680 has 256 divisors, whose sum is σ = 2586596198400. Its totient is φ = 153279682560.

The previous prime is 671796310657. The next prime is 671796310709. The reversal of 671796310680 is 86013697176.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1461232 + ... + 1865151.

It is an arithmetic number, because the mean of its divisors is an integer number (10103891400).

Almost surely, 2^671796310680 is an apocalyptic number.

671796310680 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

671796310680 is an abundant number, since it is smaller than the sum of its proper divisors (1914799887720).

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

671796310680 is a wasteful number, since it uses less digits than its factorization.

671796310680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3326431 (or 3326421 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 54.

The spelling of 671796310680 in words is "six hundred seventy-one billion, seven hundred ninety-six million, three hundred ten thousand, six hundred eighty".