670400603 has 2 divisors, whose sum is σ = 670400604. Its totient is φ = 670400602.

The previous prime is 670400587. The next prime is 670400609. The reversal of 670400603 is 306004076.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 670400603 - 2⁴ = 670400587 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (670400609) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 335200301 + 335200302.

It is an arithmetic number, because the mean of its divisors is an integer number (335200302).

Almost surely, 2^670400603 is an apocalyptic number.

670400603 is a deficient number, since it is larger than the sum of its proper divisors (1).

670400603 is an equidigital number, since it uses as much as digits as its factorization.

670400603 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 26.

The square root of 670400603 is about 25892.0953767747. The cubic root of 670400603 is about 875.2083761684.

Adding to 670400603 its reverse (306004076), we get a palindrome (976404679).

The spelling of 670400603 in words is "six hundred seventy million, four hundred thousand, six hundred three".