10509657 has 8 divisors (see below), whose sum is σ = 14064576. Its totient is φ = 6980592.

The previous prime is 10509649. The next prime is 10509661. The reversal of 10509657 is 75690501.

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

It is not a de Polignac number, because 10509657 - 2³ = 10509649 is a prime.

It is a super-2 number, since 2×10509657² = 220905780515298, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (10509677) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5493 + ... + 7154.

It is an arithmetic number, because the mean of its divisors is an integer number (1758072).

Almost surely, 2^10509657 is an apocalyptic number.

It is an amenable number.

10509657 is a deficient number, since it is larger than the sum of its proper divisors (3554919).

10509657 is a wasteful number, since it uses less digits than its factorization.

10509657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12927.

The product of its (nonzero) digits is 9450, while the sum is 33.

The square root of 10509657 is about 3241.8601141937. The cubic root of 10509657 is about 219.0430681962.

The spelling of 10509657 in words is "ten million, five hundred nine thousand, six hundred fifty-seven".