670403953 has 4 divisors (see below), whose sum is σ = 670643428. Its totient is φ = 670164480.

The previous prime is 670403879. The next prime is 670403971. The reversal of 670403953 is 359304076.

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

It can be written as a sum of positive squares in 2 ways, for example, as 450415729 + 219988224 = 21223^2 + 14832^2 .

It is a cyclic number.

It is not a de Polignac number, because 670403953 - 2²⁹ = 133533041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (670403983) 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, 115488 + ... + 121153.

It is an arithmetic number, because the mean of its divisors is an integer number (167660857).

Almost surely, 2^670403953 is an apocalyptic number.

It is an amenable number.

670403953 is a deficient number, since it is larger than the sum of its proper divisors (239475).

670403953 is a wasteful number, since it uses less digits than its factorization.

670403953 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 239474.

The product of its (nonzero) digits is 68040, while the sum is 37.

The square root of 670403953 is about 25892.1600682523. The cubic root of 670403953 is about 875.2098339750.

The spelling of 670403953 in words is "six hundred seventy million, four hundred three thousand, nine hundred fifty-three".