12749757 has 8 divisors (see below), whose sum is σ = 17042880. Its totient is φ = 8478240.

The previous prime is 12749753. The next prime is 12749761. The reversal of 12749757 is 75794721.

It is an interprime number because it is at equal distance from previous prime (12749753) and next prime (12749761).

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12749757 - 2² = 12749753 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12749753) 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 in 7 ways as a sum of consecutive naturals, for example, 3969 + ... + 6422.

It is an arithmetic number, because the mean of its divisors is an integer number (2130360).

Almost surely, 2^12749757 is an apocalyptic number.

It is an amenable number.

12749757 is a deficient number, since it is larger than the sum of its proper divisors (4293123).

12749757 is a wasteful number, since it uses less digits than its factorization.

12749757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10803.

The product of its digits is 123480, while the sum is 42.

The square root of 12749757 is about 3570.6801873033. The cubic root of 12749757 is about 233.6149522569.

The spelling of 12749757 in words is "twelve million, seven hundred forty-nine thousand, seven hundred fifty-seven".