670676773781 has 16 divisors (see below), whose sum is σ = 769023859968. Its totient is φ = 572966736000.

The previous prime is 670676773757. The next prime is 670676773783. The reversal of 670676773781 is 187377676076.

It is a cyclic number.

It is not a de Polignac number, because 670676773781 - 2¹⁴ = 670676757397 is a prime.

It is a super-2 number, since 2×670676773781² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670676773783) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2554331 + ... + 2804631.

It is an arithmetic number, because the mean of its divisors is an integer number (48063991248).

Almost surely, 2^670676773781 is an apocalyptic number.

It is an amenable number.

670676773781 is a deficient number, since it is larger than the sum of its proper divisors (98347086187).

670676773781 is a wasteful number, since it uses less digits than its factorization.

670676773781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 251572.

The product of its (nonzero) digits is 87127488, while the sum is 65.

The spelling of 670676773781 in words is "six hundred seventy billion, six hundred seventy-six million, seven hundred seventy-three thousand, seven hundred eighty-one".