749498657 has 2 divisors, whose sum is σ = 749498658. Its totient is φ = 749498656.

The previous prime is 749498647. The next prime is 749498699. The reversal of 749498657 is 756894947.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 575232256 + 174266401 = 23984^2 + 13201^2 .

It is a cyclic number.

It is not a de Polignac number, because 749498657 - 2⁶ = 749498593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 749498596 and 749498605.

It is not a weakly prime, because it can be changed into another prime (749498647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 374749328 + 374749329.

It is an arithmetic number, because the mean of its divisors is an integer number (374749329).

Almost surely, 2^749498657 is an apocalyptic number.

It is an amenable number.

749498657 is a deficient number, since it is larger than the sum of its proper divisors (1).

749498657 is an equidigital number, since it uses as much as digits as its factorization.

749498657 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15240960, while the sum is 59.

The square root of 749498657 is about 27376.9731161062. The cubic root of 749498657 is about 908.3578066931.

The spelling of 749498657 in words is "seven hundred forty-nine million, four hundred ninety-eight thousand, six hundred fifty-seven".