11670557 has 6 divisors (see below), whose sum is σ = 12087738. Its totient is φ = 11267312.

The previous prime is 11670553. The next prime is 11670559. The reversal of 11670557 is 75507611.

It can be written as a sum of positive squares in 3 ways, for example, as 306916 + 11363641 = 554^2 + 3371^2 .

It is not a de Polignac number, because 11670557 - 2² = 11670553 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11670553) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6098 + ... + 7779.

It is an arithmetic number, because the mean of its divisors is an integer number (2014623).

Almost surely, 2^11670557 is an apocalyptic number.

It is an amenable number.

11670557 is a deficient number, since it is larger than the sum of its proper divisors (417181).

11670557 is an equidigital number, since it uses as much as digits as its factorization.

11670557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13935 (or 13906 counting only the distinct ones).

The product of its (nonzero) digits is 7350, while the sum is 32.

The square root of 11670557 is about 3416.2196943405. The cubic root of 11670557 is about 226.8282774315.

The spelling of 11670557 in words is "eleven million, six hundred seventy thousand, five hundred fifty-seven".