748787761 has 2 divisors, whose sum is σ = 748787762. Its totient is φ = 748787760.

The previous prime is 748787693. The next prime is 748787783. The reversal of 748787761 is 167787847.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 682202161 + 66585600 = 26119^2 + 8160^2 .

It is a cyclic number.

It is not a de Polignac number, because 748787761 - 2²⁵ = 715233329 is a prime.

It is a super-2 number, since 2×748787761² = 1121366222046786242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (748787161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374393880 + 374393881.

It is an arithmetic number, because the mean of its divisors is an integer number (374393881).

Almost surely, 2^748787761 is an apocalyptic number.

It is an amenable number.

748787761 is a deficient number, since it is larger than the sum of its proper divisors (1).

748787761 is an equidigital number, since it uses as much as digits as its factorization.

748787761 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3687936, while the sum is 55.

The square root of 748787761 is about 27363.9865699426. The cubic root of 748787761 is about 908.0705247899.

The spelling of 748787761 in words is "seven hundred forty-eight million, seven hundred eighty-seven thousand, seven hundred sixty-one".