749722861 has 2 divisors, whose sum is σ = 749722862. Its totient is φ = 749722860.

The previous prime is 749722837. The next prime is 749722873. The reversal of 749722861 is 168227947.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 521894025 + 227828836 = 22845^2 + 15094^2 .

It is a cyclic number.

It is not a de Polignac number, because 749722861 - 2¹⁵ = 749690093 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (749722801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374861430 + 374861431.

It is an arithmetic number, because the mean of its divisors is an integer number (374861431).

Almost surely, 2^749722861 is an apocalyptic number.

It is an amenable number.

749722861 is a deficient number, since it is larger than the sum of its proper divisors (1).

749722861 is an equidigital number, since it uses as much as digits as its factorization.

749722861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 338688, while the sum is 46.

The square root of 749722861 is about 27381.0675650165. The cubic root of 749722861 is about 908.4483726325.

The spelling of 749722861 in words is "seven hundred forty-nine million, seven hundred twenty-two thousand, eight hundred sixty-one".