672128499 has 8 divisors (see below), whose sum is σ = 1024195840. Its totient is φ = 384073416.

The previous prime is 672128497. The next prime is 672128503. The reversal of 672128499 is 994821276.

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

It is not a de Polignac number, because 672128499 - 2¹ = 672128497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (672128491) 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, 16003039 + ... + 16003080.

It is an arithmetic number, because the mean of its divisors is an integer number (128024480).

Almost surely, 2^672128499 is an apocalyptic number.

672128499 is a deficient number, since it is larger than the sum of its proper divisors (352067341).

672128499 is a wasteful number, since it uses less digits than its factorization.

672128499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32006129.

The product of its digits is 435456, while the sum is 48.

The square root of 672128499 is about 25925.4411534307. The cubic root of 672128499 is about 875.9596541644.

The spelling of 672128499 in words is "six hundred seventy-two million, one hundred twenty-eight thousand, four hundred ninety-nine".