673661464 has 32 divisors (see below), whose sum is σ = 1445633280. Its totient is φ = 288297504.

The previous prime is 673661453. The next prime is 673661489. The reversal of 673661464 is 464166376.

It is a self number, because there is not a number n which added to its sum of digits gives 673661464.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32439 + ... + 48985.

It is an arithmetic number, because the mean of its divisors is an integer number (45176040).

Almost surely, 2^673661464 is an apocalyptic number.

It is an amenable number.

673661464 is an abundant number, since it is smaller than the sum of its proper divisors (771971816).

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

673661464 is a wasteful number, since it uses less digits than its factorization.

673661464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17287 (or 17283 counting only the distinct ones).

The product of its digits is 435456, while the sum is 43.

The square root of 673661464 is about 25954.9891928315. The cubic root of 673661464 is about 876.6251002828.

The spelling of 673661464 in words is "six hundred seventy-three million, six hundred sixty-one thousand, four hundred sixty-four".