670000406791 has 2 divisors, whose sum is σ = 670000406792. Its totient is φ = 670000406790.

The previous prime is 670000406749. The next prime is 670000406797. The reversal of 670000406791 is 197604000076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670000406791 - 2²¹ = 669998309639 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (670000406797) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335000203395 + 335000203396.

It is an arithmetic number, because the mean of its divisors is an integer number (335000203396).

Almost surely, 2^670000406791 is an apocalyptic number.

670000406791 is a deficient number, since it is larger than the sum of its proper divisors (1).

670000406791 is an equidigital number, since it uses as much as digits as its factorization.

670000406791 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 63504, while the sum is 40.

The spelling of 670000406791 in words is "six hundred seventy billion, four hundred six thousand, seven hundred ninety-one".