673213464 has 256 divisors, whose sum is σ = 2469657600. Its totient is φ = 164505600.

The previous prime is 673213441. The next prime is 673213469. The reversal of 673213464 is 464312376.

It is a happy number.

It is a super-2 number, since 2×673213464² = 906432736221758592, which contains 22 as substring.

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

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

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (673213469) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 281554 + ... + 283934.

It is an arithmetic number, because the mean of its divisors is an integer number (9647100).

Almost surely, 2^673213464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 673213464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234828800).

673213464 is an abundant number, since it is smaller than the sum of its proper divisors (1796444136).

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

673213464 is a wasteful number, since it uses less digits than its factorization.

673213464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2431 (or 2421 counting only the distinct ones).

The product of its digits is 72576, while the sum is 36.

The square root of 673213464 is about 25946.3574322100. The cubic root of 673213464 is about 876.4307320648.

The spelling of 673213464 in words is "six hundred seventy-three million, two hundred thirteen thousand, four hundred sixty-four".