673345512 has 48 divisors (see below), whose sum is σ = 2084166240. Its totient is φ = 192384288.

The previous prime is 673345489. The next prime is 673345529. The reversal of 673345512 is 215543376.

673345512 is a `hidden beast` number, since 6 + 73 + 34 + 551 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 667498 + ... + 668505.

It is an arithmetic number, because the mean of its divisors is an integer number (43420130).

Almost surely, 2^673345512 is an apocalyptic number.

It is an amenable number.

673345512 is an abundant number, since it is smaller than the sum of its proper divisors (1410820728).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

673345512 is a wasteful number, since it uses less digits than its factorization.

673345512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336022 (or 1336015 counting only the distinct ones).

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

The square root of 673345512 is about 25948.9019420861. The cubic root of 673345512 is about 876.4880310572.

Adding to 673345512 its reverse (215543376), we get a palindrome (888888888).

The spelling of 673345512 in words is "six hundred seventy-three million, three hundred forty-five thousand, five hundred twelve".