672573691 has 4 divisors (see below), whose sum is σ = 673693384. Its totient is φ = 671454000.

The previous prime is 672573667. The next prime is 672573719. The reversal of 672573691 is 196375276.

672573691 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 672573691 - 2¹³ = 672565499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672573631) 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, 558945 + ... + 560146.

It is an arithmetic number, because the mean of its divisors is an integer number (168423346).

Almost surely, 2^672573691 is an apocalyptic number.

672573691 is a deficient number, since it is larger than the sum of its proper divisors (1119693).

672573691 is a wasteful number, since it uses less digits than its factorization.

672573691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1119692.

The product of its digits is 476280, while the sum is 46.

The square root of 672573691 is about 25934.0257384001. The cubic root of 672573691 is about 876.1530121122.

The spelling of 672573691 in words is "six hundred seventy-two million, five hundred seventy-three thousand, six hundred ninety-one".