672291516 has 48 divisors (see below), whose sum is σ = 1778268800. Its totient is φ = 195970752.

The previous prime is 672291511. The next prime is 672291523. The reversal of 672291516 is 615192276.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (672291511) 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 15 ways as a sum of consecutive naturals, for example, 110446 + ... + 116373.

Almost surely, 2^672291516 is an apocalyptic number.

It is an amenable number.

672291516 is an abundant number, since it is smaller than the sum of its proper divisors (1105977284).

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

672291516 is a wasteful number, since it uses less digits than its factorization.

672291516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 226858 (or 226856 counting only the distinct ones).

The product of its digits is 45360, while the sum is 39.

The square root of 672291516 is about 25928.5849208938. The cubic root of 672291516 is about 876.0304664035.

The spelling of 672291516 in words is "six hundred seventy-two million, two hundred ninety-one thousand, five hundred sixteen".