673245351 has 28 divisors (see below), whose sum is σ = 1053319728. Its totient is φ = 429305184.

The previous prime is 673245341. The next prime is 673245361. The reversal of 673245351 is 153542376.

673245351 is a `hidden beast` number, since 67 + 3 + 245 + 351 = 666.

It is an interprime number because it is at equal distance from previous prime (673245341) and next prime (673245361).

It is not a de Polignac number, because 673245351 - 2⁵ = 673245319 is a prime.

It is a super-2 number, since 2×673245351² = 906518605286226402, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673245301) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 3310 + ... + 36843.

Almost surely, 2^673245351 is an apocalyptic number.

673245351 is a deficient number, since it is larger than the sum of its proper divisors (380074377).

673245351 is an equidigital number, since it uses as much as digits as its factorization.

673245351 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40194 (or 40179 counting only the distinct ones).

The product of its digits is 75600, while the sum is 36.

The square root of 673245351 is about 25946.9719042512. The cubic root of 673245351 is about 876.4445693329. Note that the first 3 decimals are identical.

The spelling of 673245351 in words is "six hundred seventy-three million, two hundred forty-five thousand, three hundred fifty-one".