768501385 has 4 divisors (see below), whose sum is σ = 922201668. Its totient is φ = 614801104.

The previous prime is 768501353. The next prime is 768501397. The reversal of 768501385 is 583105867.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 583105867 = 23 ⋅25352429.

It can be written as a sum of positive squares in 2 ways, for example, as 118200384 + 650301001 = 10872^2 + 25501^2 .

It is a cyclic number.

It is not a de Polignac number, because 768501385 - 2⁵ = 768501353 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76850134 + ... + 76850143.

It is an arithmetic number, because the mean of its divisors is an integer number (230550417).

Almost surely, 2^768501385 is an apocalyptic number.

It is an amenable number.

768501385 is a deficient number, since it is larger than the sum of its proper divisors (153700283).

768501385 is a wasteful number, since it uses less digits than its factorization.

768501385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153700282.

The product of its (nonzero) digits is 201600, while the sum is 43.

The square root of 768501385 is about 27721.8575315580. The cubic root of 768501385 is about 915.9706362987.

The spelling of 768501385 in words is "seven hundred sixty-eight million, five hundred one thousand, three hundred eighty-five".