864761 has 4 divisors (see below), whose sum is σ = 868224. Its totient is φ = 861300.

The previous prime is 864757. The next prime is 864781. The reversal of 864761 is 167468.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 864761 - 2² = 864757 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 864761.

It is not an unprimeable number, because it can be changed into a prime (864781) 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, 1325 + ... + 1866.

It is an arithmetic number, because the mean of its divisors is an integer number (217056).

2⁸⁶⁴⁷⁶¹ is an apocalyptic number.

It is an amenable number.

864761 is a deficient number, since it is larger than the sum of its proper divisors (3463).

864761 is a wasteful number, since it uses less digits than its factorization.

864761 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3462.

The product of its digits is 8064, while the sum is 32.

The square root of 864761 is about 929.9252658144. The cubic root of 864761 is about 95.2720181576.

The spelling of 864761 in words is "eight hundred sixty-four thousand, seven hundred sixty-one".