673515907 has 2 divisors, whose sum is σ = 673515908. Its totient is φ = 673515906.

The previous prime is 673515901. The next prime is 673515917. The reversal of 673515907 is 709515376.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 673515907 - 2²³ = 665127299 is a prime.

It is not a weakly prime, because it can be changed into another prime (673515901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 336757953 + 336757954.

It is an arithmetic number, because the mean of its divisors is an integer number (336757954).

Almost surely, 2^673515907 is an apocalyptic number.

673515907 is a deficient number, since it is larger than the sum of its proper divisors (1).

673515907 is an equidigital number, since it uses as much as digits as its factorization.

673515907 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 198450, while the sum is 43.

The square root of 673515907 is about 25952.1850139829. The cubic root of 673515907 is about 876.5619587210.

The spelling of 673515907 in words is "six hundred seventy-three million, five hundred fifteen thousand, nine hundred seven".