634232861 has 2 divisors, whose sum is σ = 634232862. Its totient is φ = 634232860.

The previous prime is 634232849. The next prime is 634232941. The reversal of 634232861 is 168232436.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 470239225 + 163993636 = 21685^2 + 12806^2 .

It is a cyclic number.

It is not a de Polignac number, because 634232861 - 2¹⁴ = 634216477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (634232801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 317116430 + 317116431.

It is an arithmetic number, because the mean of its divisors is an integer number (317116431).

Almost surely, 2^634232861 is an apocalyptic number.

It is an amenable number.

634232861 is a deficient number, since it is larger than the sum of its proper divisors (1).

634232861 is an equidigital number, since it uses as much as digits as its factorization.

634232861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 41472, while the sum is 35.

The square root of 634232861 is about 25183.9802453862. The cubic root of 634232861 is about 859.1775357499.

The spelling of 634232861 in words is "six hundred thirty-four million, two hundred thirty-two thousand, eight hundred sixty-one".