860420651 has 2 divisors, whose sum is σ = 860420652. Its totient is φ = 860420650.

The previous prime is 860420641. The next prime is 860420657. The reversal of 860420651 is 156024068.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-860420651 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (860420657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430210325 + 430210326.

It is an arithmetic number, because the mean of its divisors is an integer number (430210326).

Almost surely, 2^860420651 is an apocalyptic number.

860420651 is a deficient number, since it is larger than the sum of its proper divisors (1).

860420651 is an equidigital number, since it uses as much as digits as its factorization.

860420651 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11520, while the sum is 32.

The square root of 860420651 is about 29332.9277604538. The cubic root of 860420651 is about 951.1235648191.

The spelling of 860420651 in words is "eight hundred sixty million, four hundred twenty thousand, six hundred fifty-one".