10409657 has 4 divisors (see below), whose sum is σ = 10428276. Its totient is φ = 10391040.

The previous prime is 10409647. The next prime is 10409681. The reversal of 10409657 is 75690401.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 75690401 = 23 ⋅3290887.

It can be written as a sum of positive squares in 2 ways, for example, as 5812921 + 4596736 = 2411^2 + 2144^2 .

It is a cyclic number.

It is not a de Polignac number, because 10409657 - 2⁸ = 10409401 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (10409647) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8444 + ... + 9597.

It is an arithmetic number, because the mean of its divisors is an integer number (2607069).

Almost surely, 2^10409657 is an apocalyptic number.

It is an amenable number.

10409657 is a deficient number, since it is larger than the sum of its proper divisors (18619).

10409657 is an equidigital number, since it uses as much as digits as its factorization.

10409657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18618.

The product of its (nonzero) digits is 7560, while the sum is 32.

The square root of 10409657 is about 3226.4000061989. The cubic root of 10409657 is about 218.3461171286.

The spelling of 10409657 in words is "ten million, four hundred nine thousand, six hundred fifty-seven".