672717892 has 144 divisors (see below), whose sum is σ = 1576592640. Its totient is φ = 245329920.

The previous prime is 672717827. The next prime is 672717919. The reversal of 672717892 is 298717276.

It is a hoax number, since the sum of its digits (49) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6935188 + ... + 6935284.

It is an arithmetic number, because the mean of its divisors is an integer number (10948560).

Almost surely, 2^672717892 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 672717892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (788296320).

672717892 is an abundant number, since it is smaller than the sum of its proper divisors (903874748).

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

672717892 is a wasteful number, since it uses less digits than its factorization.

672717892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 242 (or 229 counting only the distinct ones).

The product of its digits is 592704, while the sum is 49.

The square root of 672717892 is about 25936.8057401061. The cubic root of 672717892 is about 876.2156238943.

The spelling of 672717892 in words is "six hundred seventy-two million, seven hundred seventeen thousand, eight hundred ninety-two".