672000091 has 8 divisors (see below), whose sum is σ = 782491104. Its totient is φ = 565131840.

The previous prime is 672000079. The next prime is 672000097. The reversal of 672000091 is 190000276.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 672000091 - 2⁵ = 672000059 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672000097) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 905290 + ... + 906031.

It is an arithmetic number, because the mean of its divisors is an integer number (97811388).

Almost surely, 2^672000091 is an apocalyptic number.

672000091 is a deficient number, since it is larger than the sum of its proper divisors (110491013).

672000091 is a wasteful number, since it uses less digits than its factorization.

672000091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1811381.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 672000091 is about 25922.9645488320. The cubic root of 672000091 is about 875.9038675149.

The spelling of 672000091 in words is "six hundred seventy-two million, ninety-one", and thus it is an aban number.