672403687 has 4 divisors (see below), whose sum is σ = 675782800. Its totient is φ = 669024576.

The previous prime is 672403679. The next prime is 672403691. The reversal of 672403687 is 786304276.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 672403687 - 2³ = 672403679 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672403607) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1689258 + ... + 1689655.

It is an arithmetic number, because the mean of its divisors is an integer number (168945700).

Almost surely, 2^672403687 is an apocalyptic number.

672403687 is a deficient number, since it is larger than the sum of its proper divisors (3379113).

672403687 is a wasteful number, since it uses less digits than its factorization.

672403687 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3379112.

The product of its (nonzero) digits is 338688, while the sum is 43.

The square root of 672403687 is about 25930.7479066841. The cubic root of 672403687 is about 876.0791852239.

The spelling of 672403687 in words is "six hundred seventy-two million, four hundred three thousand, six hundred eighty-seven".