11164861 has 4 divisors (see below), whose sum is σ = 11466652. Its totient is φ = 10863072.

The previous prime is 11164847. The next prime is 11164871. The reversal of 11164861 is 16846111.

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 8820900 + 2343961 = 2970^2 + 1531^2 .

It is a cyclic number.

It is not a de Polignac number, because 11164861 - 2¹³ = 11156669 is a prime.

It is a super-2 number, since 2×11164861² = 249308242298642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11164841) 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, 150840 + ... + 150913.

It is an arithmetic number, because the mean of its divisors is an integer number (2866663).

Almost surely, 2^11164861 is an apocalyptic number.

It is an amenable number.

11164861 is a deficient number, since it is larger than the sum of its proper divisors (301791).

11164861 is an equidigital number, since it uses as much as digits as its factorization.

11164861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 301790.

The product of its digits is 1152, while the sum is 28.

The square root of 11164861 is about 3341.3860896341. The cubic root of 11164861 is about 223.5035575075.

The spelling of 11164861 in words is "eleven million, one hundred sixty-four thousand, eight hundred sixty-one".