768647 has 4 divisors (see below), whose sum is σ = 838536. Its totient is φ = 698760.

The previous prime is 768643. The next prime is 768653. The reversal of 768647 is 746867.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 768647 - 2² = 768643 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 768647.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (768641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34928 + ... + 34949.

It is an arithmetic number, because the mean of its divisors is an integer number (209634).

768647 is a Friedman number, since it can be written as 7-6^7+8^6*4, using all its digits and the basic arithmetic operations.

2⁷⁶⁸⁶⁴⁷ is an apocalyptic number.

768647 is a deficient number, since it is larger than the sum of its proper divisors (69889).

768647 is a wasteful number, since it uses less digits than its factorization.

768647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69888.

The product of its digits is 56448, while the sum is 38.

The square root of 768647 is about 876.7251564772. The cubic root of 768647 is about 91.6028485095.

The spelling of 768647 in words is "seven hundred sixty-eight thousand, six hundred forty-seven".