768665131 has 8 divisors (see below), whose sum is σ = 832874000. Its totient is φ = 705182112.

The previous prime is 768665113. The next prime is 768665173. The reversal of 768665131 is 131566867.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 768665131 - 2⁷ = 768665003 is a prime.

It is a super-2 number, since 2×768665131² = 1181692167230494322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (768665831) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 179256 + ... + 183493.

It is an arithmetic number, because the mean of its divisors is an integer number (104109250).

Almost surely, 2^768665131 is an apocalyptic number.

768665131 is a deficient number, since it is larger than the sum of its proper divisors (64208869).

768665131 is a wasteful number, since it uses less digits than its factorization.

768665131 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362925.

The product of its digits is 181440, while the sum is 43.

The square root of 768665131 is about 27724.8107477761. The cubic root of 768665131 is about 916.0356875267.

The spelling of 768665131 in words is "seven hundred sixty-eight million, six hundred sixty-five thousand, one hundred thirty-one".