107256649 has 4 divisors (see below), whose sum is σ = 107599636. Its totient is φ = 106913664.

The previous prime is 107256619. The next prime is 107256661. The reversal of 107256649 is 946652701.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23863225 + 83393424 = 4885^2 + 9132^2 .

It is a cyclic number.

It is not a de Polignac number, because 107256649 - 2⁹ = 107256137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (107256619) 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 3 ways as a sum of consecutive naturals, for example, 171024 + ... + 171649.

It is an arithmetic number, because the mean of its divisors is an integer number (26899909).

Almost surely, 2^107256649 is an apocalyptic number.

It is an amenable number.

107256649 is a deficient number, since it is larger than the sum of its proper divisors (342987).

107256649 is an equidigital number, since it uses as much as digits as its factorization.

107256649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342986.

The product of its (nonzero) digits is 90720, while the sum is 40.

The square root of 107256649 is about 10356.4786003738. The cubic root of 107256649 is about 475.1252102049.

The spelling of 107256649 in words is "one hundred seven million, two hundred fifty-six thousand, six hundred forty-nine".