761938857 has 6 divisors (see below), whose sum is σ = 1100578362. Its totient is φ = 507959232.

The previous prime is 761938847. The next prime is 761938901. The reversal of 761938857 is 758839167.

761938857 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 630813456 + 131125401 = 25116^2 + 11451^2 .

It is not a de Polignac number, because 761938857 - 2⁴ = 761938841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (761938847) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 42329928 + ... + 42329945.

It is an arithmetic number, because the mean of its divisors is an integer number (183429727).

Almost surely, 2^761938857 is an apocalyptic number.

It is an amenable number.

761938857 is a deficient number, since it is larger than the sum of its proper divisors (338639505).

761938857 is a wasteful number, since it uses less digits than its factorization.

761938857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84659879 (or 84659876 counting only the distinct ones).

The product of its digits is 2540160, while the sum is 54.

The square root of 761938857 is about 27603.2399728727. The cubic root of 761938857 is about 913.3559045546.

The spelling of 761938857 in words is "seven hundred sixty-one million, nine hundred thirty-eight thousand, eight hundred fifty-seven".