1672791677 has 6 divisors (see below), whose sum is σ = 1714588314. Its totient is φ = 1631990240.

The previous prime is 1672791667. The next prime is 1672791691. The reversal of 1672791677 is 7761972761.

It can be written as a sum of positive squares in 3 ways, for example, as 42328036 + 1630463641 = 6506^2 + 40379^2 .

It is not a de Polignac number, because 1672791677 - 2⁴ = 1672791661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672791667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 495878 + ... + 499239.

It is an arithmetic number, because the mean of its divisors is an integer number (285764719).

Almost surely, 2^1672791677 is an apocalyptic number.

It is an amenable number.

1672791677 is a deficient number, since it is larger than the sum of its proper divisors (41796637).

1672791677 is an frugal number, since it uses more digits than its factorization.

1672791677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 995199 (or 995158 counting only the distinct ones).

The product of its digits is 1555848, while the sum is 53.

The square root of 1672791677 is about 40899.7760018316. The cubic root of 1672791677 is about 1187.0817264763.

The spelling of 1672791677 in words is "one billion, six hundred seventy-two million, seven hundred ninety-one thousand, six hundred seventy-seven".