670430636658 has 96 divisors (see below), whose sum is σ = 1623486421440. Its totient is φ = 199260494208.

The previous prime is 670430636593. The next prime is 670430636663. The reversal of 670430636658 is 856636034076.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1939141 + ... + 2258567.

It is an arithmetic number, because the mean of its divisors is an integer number (16911316890).

Almost surely, 2^670430636658 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 670430636658, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (811743210720).

670430636658 is an abundant number, since it is smaller than the sum of its proper divisors (953055784782).

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

670430636658 is a wasteful number, since it uses less digits than its factorization.

670430636658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319509 (or 319468 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 54.

The spelling of 670430636658 in words is "six hundred seventy billion, four hundred thirty million, six hundred thirty-six thousand, six hundred fifty-eight".