774489631 has 16 divisors (see below), whose sum is σ = 832073760. Its totient is φ = 719470080.

The previous prime is 774489623. The next prime is 774489643. The reversal of 774489631 is 136984477.

It is a cyclic number.

It is not a de Polignac number, because 774489631 - 2³ = 774489623 is a prime.

It is a super-2 number, since 2×774489631² = 1199668377053032322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (774489691) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 82336 + ... + 91258.

It is an arithmetic number, because the mean of its divisors is an integer number (52004610).

Almost surely, 2^774489631 is an apocalyptic number.

774489631 is a deficient number, since it is larger than the sum of its proper divisors (57584129).

774489631 is a wasteful number, since it uses less digits than its factorization.

774489631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9066.

The product of its digits is 1016064, while the sum is 49.

The square root of 774489631 is about 27829.6538066861. The cubic root of 774489631 is about 918.3435975970.

The spelling of 774489631 in words is "seven hundred seventy-four million, four hundred eighty-nine thousand, six hundred thirty-one".