672403887 has 12 divisors (see below), whose sum is σ = 980162040. Its totient is φ = 444156048.

The previous prime is 672403883. The next prime is 672403891. The reversal of 672403887 is 788304276.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (672403883) and next prime (672403891).

It is not a de Polignac number, because 672403887 - 2² = 672403883 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a nialpdrome in base 14.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672403883) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 341733 + ... + 343694.

It is an arithmetic number, because the mean of its divisors is an integer number (81680170).

Almost surely, 2^672403887 is an apocalyptic number.

672403887 is a deficient number, since it is larger than the sum of its proper divisors (307758153).

672403887 is a wasteful number, since it uses less digits than its factorization.

672403887 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 685542 (or 685539 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The square root of 672403887 is about 25930.7517631094. The cubic root of 672403887 is about 876.0792720843.

The spelling of 672403887 in words is "six hundred seventy-two million, four hundred three thousand, eight hundred eighty-seven".