670000406731 has 4 divisors (see below), whose sum is σ = 678072700872. Its totient is φ = 661928112592.

The previous prime is 670000406717. The next prime is 670000406749. The reversal of 670000406731 is 137604000076.

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 670000406731 - 2²¹ = 669998309579 is a prime.

It is a super-2 number, since 2×670000406731² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670000406791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4036146946 + ... + 4036147111.

It is an arithmetic number, because the mean of its divisors is an integer number (169518175218).

Almost surely, 2^670000406731 is an apocalyptic number.

670000406731 is a deficient number, since it is larger than the sum of its proper divisors (8072294141).

670000406731 is an equidigital number, since it uses as much as digits as its factorization.

670000406731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8072294140.

The product of its (nonzero) digits is 21168, while the sum is 34.

The spelling of 670000406731 in words is "six hundred seventy billion, four hundred six thousand, seven hundred thirty-one".