11672257 has 4 divisors (see below), whose sum is σ = 11709396. Its totient is φ = 11635120.

The previous prime is 11672191. The next prime is 11672273. The reversal of 11672257 is 75227611.

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 1962801 + 9709456 = 1401^2 + 3116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11672257 is a prime.

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11672357) 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, 18094 + ... + 18727.

It is an arithmetic number, because the mean of its divisors is an integer number (2927349).

Almost surely, 2^11672257 is an apocalyptic number.

It is an amenable number.

11672257 is a deficient number, since it is larger than the sum of its proper divisors (37139).

11672257 is an equidigital number, since it uses as much as digits as its factorization.

11672257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37138.

The product of its digits is 5880, while the sum is 31.

The square root of 11672257 is about 3416.4684983181. The cubic root of 11672257 is about 226.8392905976.

Adding to 11672257 its reverse (75227611), we get a palindrome (86899868).

The spelling of 11672257 in words is "eleven million, six hundred seventy-two thousand, two hundred fifty-seven".