749257 has 2 divisors, whose sum is σ = 749258. Its totient is φ = 749256.

The previous prime is 749249. The next prime is 749267. The reversal of 749257 is 752947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 622521 + 126736 = 789^2 + 356^2 .

It is a cyclic number.

It is not a de Polignac number, because 749257 - 2³ = 749249 is a prime.

It is a super-2 number, since 2×749257² = 1122772104098, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (749237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374628 + 374629.

It is an arithmetic number, because the mean of its divisors is an integer number (374629).

2⁷⁴⁹²⁵⁷ is an apocalyptic number.

It is an amenable number.

749257 is a deficient number, since it is larger than the sum of its proper divisors (1).

749257 is an equidigital number, since it uses as much as digits as its factorization.

749257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17640, while the sum is 34.

The square root of 749257 is about 865.5963262399. The cubic root of 749257 is about 90.8260170486.

The spelling of 749257 in words is "seven hundred forty-nine thousand, two hundred fifty-seven".