670746520676431 has 4 divisors (see below), whose sum is σ = 670748630903712. Its totient is φ = 670744410449152.

The previous prime is 670746520676377. The next prime is 670746520676489. The reversal of 670746520676431 is 134676025647076.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 670746520676431 - 2⁹ = 670746520675919 is a prime.

It is a super-2 number, since 2×670746520676431² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670746520676131) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054636786 + ... + 1055272591.

It is an arithmetic number, because the mean of its divisors is an integer number (167687157725928).

Almost surely, 2^{670746520676431} is an apocalyptic number.

670746520676431 is a deficient number, since it is larger than the sum of its proper divisors (2110227281).

670746520676431 is a wasteful number, since it uses less digits than its factorization.

670746520676431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2110227280.

The product of its (nonzero) digits is 213373440, while the sum is 64.

The spelling of 670746520676431 in words is "six hundred seventy trillion, seven hundred forty-six billion, five hundred twenty million, six hundred seventy-six thousand, four hundred thirty-one".