1672116621 has 12 divisors (see below), whose sum is σ = 2593487232. Its totient is φ = 955495128.

The previous prime is 1672116601. The next prime is 1672116631. The reversal of 1672116621 is 1266112761.

It is not a de Polignac number, because 1672116621 - 2¹⁴ = 1672100237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672116601) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5687325 + ... + 5687618.

It is an arithmetic number, because the mean of its divisors is an integer number (216123936).

Almost surely, 2^1672116621 is an apocalyptic number.

It is an amenable number.

1672116621 is a deficient number, since it is larger than the sum of its proper divisors (921370611).

1672116621 is a wasteful number, since it uses less digits than its factorization.

1672116621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11374960 (or 11374953 counting only the distinct ones).

The product of its digits is 6048, while the sum is 33.

The square root of 1672116621 is about 40891.5226055475. The cubic root of 1672116621 is about 1186.9220224973.

The spelling of 1672116621 in words is "one billion, six hundred seventy-two million, one hundred sixteen thousand, six hundred twenty-one".