672735771 has 6 divisors (see below), whose sum is σ = 971729460. Its totient is φ = 448490508.

The previous prime is 672735757. The next prime is 672735779. The reversal of 672735771 is 177537276.

672735771 is a `hidden beast` number, since 6 + 7 + 2 + 73 + 577 + 1 = 666.

It is not a de Polignac number, because 672735771 - 2¹¹ = 672733723 is a prime.

It is not an unprimeable number, because it can be changed into a prime (672735779) 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 5 ways as a sum of consecutive naturals, for example, 37374201 + ... + 37374218.

It is an arithmetic number, because the mean of its divisors is an integer number (161954910).

Almost surely, 2^672735771 is an apocalyptic number.

672735771 is a deficient number, since it is larger than the sum of its proper divisors (298993689).

672735771 is a wasteful number, since it uses less digits than its factorization.

672735771 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74748425 (or 74748422 counting only the distinct ones).

The product of its digits is 432180, while the sum is 45.

The square root of 672735771 is about 25937.1504024633. The cubic root of 672735771 is about 876.2233862965.

The spelling of 672735771 in words is "six hundred seventy-two million, seven hundred thirty-five thousand, seven hundred seventy-one".