670650640704 has 336 divisors, whose sum is σ = 2203850425920. Its totient is φ = 193133445120.

The previous prime is 670650640691. The next prime is 670650640729. The reversal of 670650640704 is 407046056076.

It is a happy number.

670650640704 is a `hidden beast` number, since 6 + 70 + 6 + 506 + 4 + 0 + 70 + 4 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 670650640704.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 10047312 + ... + 10113840.

Almost surely, 2^670650640704 is an apocalyptic number.

670650640704 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670650640704, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1101925212960).

670650640704 is an abundant number, since it is smaller than the sum of its proper divisors (1533199785216).

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

670650640704 is a wasteful number, since it uses less digits than its factorization.

670650640704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66638 (or 66625 counting only the distinct ones).

The product of its (nonzero) digits is 846720, while the sum is 45.

The spelling of 670650640704 in words is "six hundred seventy billion, six hundred fifty million, six hundred forty thousand, seven hundred four".