11670491 has 4 divisors (see below), whose sum is σ = 13337712. Its totient is φ = 10003272.

The previous prime is 11670487. The next prime is 11670497. The reversal of 11670491 is 19407611.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 19407611 = 607 ⋅31973.

It is a cyclic number.

It is not a de Polignac number, because 11670491 - 2² = 11670487 is a prime.

It is a super-4 number, since 4×11670491⁴ (a number of 29 digits) contains 4444 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11670497) 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, 833600 + ... + 833613.

It is an arithmetic number, because the mean of its divisors is an integer number (3334428).

Almost surely, 2^11670491 is an apocalyptic number.

11670491 is a deficient number, since it is larger than the sum of its proper divisors (1667221).

11670491 is an equidigital number, since it uses as much as digits as its factorization.

11670491 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1667220.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 11670491 is about 3416.2100345266. The cubic root of 11670491 is about 226.8278498399.

It can be divided in two parts, 116 and 70491, that added together give a palindrome (70607).

The spelling of 11670491 in words is "eleven million, six hundred seventy thousand, four hundred ninety-one".