774161731 has 6 divisors (see below), whose sum is σ = 900555540. Its totient is φ = 663567156.

The previous prime is 774161711. The next prime is 774161741. The reversal of 774161731 is 137161477.

It is not a de Polignac number, because 774161731 - 2⁷ = 774161603 is a prime.

It is a super-2 number, since 2×774161731² = 1198652771489832722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (774161701) 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 5 ways as a sum of consecutive naturals, for example, 7899561 + ... + 7899658.

It is an arithmetic number, because the mean of its divisors is an integer number (150092590).

Almost surely, 2^774161731 is an apocalyptic number.

774161731 is a deficient number, since it is larger than the sum of its proper divisors (126393809).

774161731 is a wasteful number, since it uses less digits than its factorization.

774161731 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15799233 (or 15799226 counting only the distinct ones).

The product of its digits is 24696, while the sum is 37.

The square root of 774161731 is about 27823.7619850372. The cubic root of 774161731 is about 918.2139778837.

The spelling of 774161731 in words is "seven hundred seventy-four million, one hundred sixty-one thousand, seven hundred thirty-one".