670523567616 has 800 divisors, whose sum is σ = 2402491373568. Its totient is φ = 182038855680.

The previous prime is 670523567591. The next prime is 670523567647. The reversal of 670523567616 is 616765325076.

670523567616 is a `hidden beast` number, since 6 + 7 + 0 + 523 + 56 + 7 + 61 + 6 = 666.

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 79 ways as a sum of consecutive naturals, for example, 1555738921 + ... + 1555739351.

Almost surely, 2^670523567616 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670523567616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1201245686784).

670523567616 is an abundant number, since it is smaller than the sum of its proper divisors (1731967805952).

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

670523567616 is a wasteful number, since it uses less digits than its factorization.

670523567616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 724 (or 699 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 54.

The spelling of 670523567616 in words is "six hundred seventy billion, five hundred twenty-three million, five hundred sixty-seven thousand, six hundred sixteen".