672335712 has 144 divisors (see below), whose sum is σ = 1982150352. Its totient is φ = 216023040.

The previous prime is 672335683. The next prime is 672335759. The reversal of 672335712 is 217533276.

672335712 is a `hidden beast` number, since 67 + 23 + 3 + 571 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1145083 + ... + 1145669.

It is an arithmetic number, because the mean of its divisors is an integer number (13764933).

Almost surely, 2^672335712 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 672335712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (991075176).

672335712 is an abundant number, since it is smaller than the sum of its proper divisors (1309814640).

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

672335712 is a wasteful number, since it uses less digits than its factorization.

672335712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 741 (or 730 counting only the distinct ones).

The product of its digits is 52920, while the sum is 36.

The square root of 672335712 is about 25929.4371709067. The cubic root of 672335712 is about 876.0496625376.

Adding to 672335712 its reverse (217533276), we get a palindrome (889868988).

The spelling of 672335712 in words is "six hundred seventy-two million, three hundred thirty-five thousand, seven hundred twelve".