861364997 has 2 divisors, whose sum is σ = 861364998. Its totient is φ = 861364996.

The previous prime is 861364991. The next prime is 861365003. The reversal of 861364997 is 799463168.

861364997 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (861364991) and next prime (861365003).

It can be written as a sum of positive squares in only one way, i.e., 827655361 + 33709636 = 28769^2 + 5806^2 .

It is a cyclic number.

It is not a de Polignac number, because 861364997 - 2¹² = 861360901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861364991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430682498 + 430682499.

It is an arithmetic number, because the mean of its divisors is an integer number (430682499).

Almost surely, 2^861364997 is an apocalyptic number.

It is an amenable number.

861364997 is a deficient number, since it is larger than the sum of its proper divisors (1).

861364997 is an equidigital number, since it uses as much as digits as its factorization.

861364997 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1959552, while the sum is 53.

The square root of 861364997 is about 29349.0203754742. The cubic root of 861364997 is about 951.4714029505.

The spelling of 861364997 in words is "eight hundred sixty-one million, three hundred sixty-four thousand, nine hundred ninety-seven".