764867 has 4 divisors (see below), whose sum is σ = 769320. Its totient is φ = 760416.

The previous prime is 764857. The next prime is 764887. The reversal of 764867 is 768467.

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 764867 - 2⁸ = 764611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 764867.

It is not an unprimeable number, because it can be changed into a prime (764837) 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, 1958 + ... + 2315.

It is an arithmetic number, because the mean of its divisors is an integer number (192330).

2⁷⁶⁴⁸⁶⁷ is an apocalyptic number.

764867 is a deficient number, since it is larger than the sum of its proper divisors (4453).

764867 is a wasteful number, since it uses less digits than its factorization.

764867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4452.

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

The square root of 764867 is about 874.5667498825. The cubic root of 764867 is about 91.4524422650.

Subtracting 764867 from its reverse (768467), we obtain a square (3600 = 60²).

The spelling of 764867 in words is "seven hundred sixty-four thousand, eight hundred sixty-seven".