860862561 has 32 divisors (see below), whose sum is σ = 1311082752. Its totient is φ = 498389760.

The previous prime is 860862533. The next prime is 860862571. The reversal of 860862561 is 165268068.

It is not a de Polignac number, because 860862561 - 2¹⁷ = 860731489 is a prime.

It is not an unprimeable number, because it can be changed into a prime (860862521) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 46851 + ... + 62583.

It is an arithmetic number, because the mean of its divisors is an integer number (40971336).

Almost surely, 2^860862561 is an apocalyptic number.

It is an amenable number.

860862561 is a deficient number, since it is larger than the sum of its proper divisors (450220191).

860862561 is a wasteful number, since it uses less digits than its factorization.

860862561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15833.

The product of its (nonzero) digits is 138240, while the sum is 42.

The square root of 860862561 is about 29340.4594544803. The cubic root of 860862561 is about 951.2863685506.

The spelling of 860862561 in words is "eight hundred sixty million, eight hundred sixty-two thousand, five hundred sixty-one".