768083991 has 8 divisors (see below), whose sum is σ = 1024393200. Its totient is φ = 511915392.

The previous prime is 768083989. The next prime is 768084049. The reversal of 768083991 is 199380867.

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

It is not a de Polignac number, because 768083991 - 2¹ = 768083989 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768083941) 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, 21666 + ... + 44783.

It is an arithmetic number, because the mean of its divisors is an integer number (128049150).

Almost surely, 2^768083991 is an apocalyptic number.

768083991 is a deficient number, since it is larger than the sum of its proper divisors (256309209).

768083991 is a wasteful number, since it uses less digits than its factorization.

768083991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70305.

The product of its (nonzero) digits is 653184, while the sum is 51.

The square root of 768083991 is about 27714.3282617494. The cubic root of 768083991 is about 915.8047767473.

The spelling of 768083991 in words is "seven hundred sixty-eight million, eighty-three thousand, nine hundred ninety-one".