672499279 has 4 divisors (see below), whose sum is σ = 675385776. Its totient is φ = 669612784.

The previous prime is 672499253. The next prime is 672499307. The reversal of 672499279 is 972994276.

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 672499279 - 2¹⁵ = 672466511 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 (672499979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1442899 + ... + 1443364.

It is an arithmetic number, because the mean of its divisors is an integer number (168846444).

Almost surely, 2^672499279 is an apocalyptic number.

672499279 is a deficient number, since it is larger than the sum of its proper divisors (2886497).

672499279 is a wasteful number, since it uses less digits than its factorization.

672499279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2886496.

The product of its digits is 3429216, while the sum is 55.

The square root of 672499279 is about 25932.5910583574. The cubic root of 672499279 is about 876.1206990718.

The spelling of 672499279 in words is "six hundred seventy-two million, four hundred ninety-nine thousand, two hundred seventy-nine".