672799554 has 32 divisors (see below), whose sum is σ = 1708698240. Its totient is φ = 192228336.

The previous prime is 672799553. The next prime is 672799591. The reversal of 672799554 is 455997276.

672799554 is a `hidden beast` number, since 67 + 27 + 9 + 9 + 554 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 672799554.

It is not an unprimeable number, because it can be changed into a prime (672799553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 889569 + ... + 890324.

It is an arithmetic number, because the mean of its divisors is an integer number (53396820).

Almost surely, 2^672799554 is an apocalyptic number.

672799554 is an abundant number, since it is smaller than the sum of its proper divisors (1035898686).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

672799554 is a wasteful number, since it uses less digits than its factorization.

672799554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1779911 (or 1779905 counting only the distinct ones).

The product of its digits is 4762800, while the sum is 54.

The square root of 672799554 is about 25938.3799417003. The cubic root of 672799554 is about 876.2510774012.

The spelling of 672799554 in words is "six hundred seventy-two million, seven hundred ninety-nine thousand, five hundred fifty-four".