672494623 has 4 divisors (see below), whose sum is σ = 672593688. Its totient is φ = 672395560.

The previous prime is 672494617. The next prime is 672494639. The reversal of 672494623 is 326494276.

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 672494623 - 2²⁹ = 135623711 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 672494623.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672495623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38536 + ... + 53197.

It is an arithmetic number, because the mean of its divisors is an integer number (168148422).

Almost surely, 2^672494623 is an apocalyptic number.

672494623 is a deficient number, since it is larger than the sum of its proper divisors (99065).

672494623 is an equidigital number, since it uses as much as digits as its factorization.

672494623 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99064.

The product of its digits is 435456, while the sum is 43.

The square root of 672494623 is about 25932.5012869951. The cubic root of 672494623 is about 876.1186771478.

The spelling of 672494623 in words is "six hundred seventy-two million, four hundred ninety-four thousand, six hundred twenty-three".