861337027 has 2 divisors, whose sum is σ = 861337028. Its totient is φ = 861337026.

The previous prime is 861336967. The next prime is 861337049. The reversal of 861337027 is 720733168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861337027 - 2¹¹ = 861334979 is a prime.

It is not a weakly prime, because it can be changed into another prime (861337727) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430668513 + 430668514.

It is an arithmetic number, because the mean of its divisors is an integer number (430668514).

Almost surely, 2^861337027 is an apocalyptic number.

861337027 is a deficient number, since it is larger than the sum of its proper divisors (1).

861337027 is an equidigital number, since it uses as much as digits as its factorization.

861337027 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 42336, while the sum is 37.

The square root of 861337027 is about 29348.5438650711. The cubic root of 861337027 is about 951.4611042025.

The spelling of 861337027 in words is "eight hundred sixty-one million, three hundred thirty-seven thousand, twenty-seven".