670404071 has 4 divisors (see below), whose sum is σ = 670460472. Its totient is φ = 670347672.

The previous prime is 670404011. The next prime is 670404083. The reversal of 670404071 is 170404076.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-670404071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (670404001) 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, 2660 + ... + 36713.

It is an arithmetic number, because the mean of its divisors is an integer number (167615118).

Almost surely, 2^670404071 is an apocalyptic number.

670404071 is a deficient number, since it is larger than the sum of its proper divisors (56401).

670404071 is a wasteful number, since it uses less digits than its factorization.

670404071 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56400.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 670404071 is about 25892.1623469343. The cubic root of 670404071 is about 875.2098853245.

The spelling of 670404071 in words is "six hundred seventy million, four hundred four thousand, seventy-one".