860651 has 4 divisors (see below), whose sum is σ = 938904. Its totient is φ = 782400.

The previous prime is 860647. The next prime is 860663. The reversal of 860651 is 156068.

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 860651 - 2² = 860647 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 860651.

It is not an unprimeable number, because it can be changed into a prime (860641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 39110 + ... + 39131.

It is an arithmetic number, because the mean of its divisors is an integer number (234726).

2⁸⁶⁰⁶⁵¹ is an apocalyptic number.

860651 is a deficient number, since it is larger than the sum of its proper divisors (78253).

860651 is a wasteful number, since it uses less digits than its factorization.

860651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78252.

The product of its (nonzero) digits is 1440, while the sum is 26.

The square root of 860651 is about 927.7127788276. The cubic root of 860651 is about 95.1208434475.

The spelling of 860651 in words is "eight hundred sixty thousand, six hundred fifty-one".