776540331 has 32 divisors (see below), whose sum is σ = 1392122880. Its totient is φ = 417633408.

The previous prime is 776540327. The next prime is 776540333. The reversal of 776540331 is 133045677.

It is not a de Polignac number, because 776540331 - 2² = 776540327 is a prime.

It is a super-2 number, since 2×776540331² = 1206029771339179122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (776540333) 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 31 ways as a sum of consecutive naturals, for example, 117631 + ... + 124056.

It is an arithmetic number, because the mean of its divisors is an integer number (43503840).

Almost surely, 2^776540331 is an apocalyptic number.

776540331 is a deficient number, since it is larger than the sum of its proper divisors (615582549).

776540331 is a wasteful number, since it uses less digits than its factorization.

776540331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 241720 (or 241714 counting only the distinct ones).

The product of its (nonzero) digits is 52920, while the sum is 36.

The square root of 776540331 is about 27866.4732429491. The cubic root of 776540331 is about 919.1534158403.

The spelling of 776540331 in words is "seven hundred seventy-six million, five hundred forty thousand, three hundred thirty-one".