771982137 has 16 divisors (see below), whose sum is σ = 1163064000. Its totient is φ = 505930752.

The previous prime is 771982111. The next prime is 771982147. The reversal of 771982137 is 731289177.

It is not a de Polignac number, because 771982137 - 2⁷ = 771982009 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 771982092 and 771982101.

It is not an unprimeable number, because it can be changed into a prime (771982147) 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 15 ways as a sum of consecutive naturals, for example, 240712 + ... + 243897.

It is an arithmetic number, because the mean of its divisors is an integer number (72691500).

Almost surely, 2^771982137 is an apocalyptic number.

It is an amenable number.

771982137 is a deficient number, since it is larger than the sum of its proper divisors (391081863).

771982137 is a wasteful number, since it uses less digits than its factorization.

771982137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 484677 (or 484671 counting only the distinct ones).

The product of its digits is 148176, while the sum is 45.

The square root of 771982137 is about 27784.5665253212. The cubic root of 771982137 is about 917.3514471654.

The spelling of 771982137 in words is "seven hundred seventy-one million, nine hundred eighty-two thousand, one hundred thirty-seven".