11620889 has 6 divisors (see below), whose sum is σ = 13518234. Its totient is φ = 9960720.

The previous prime is 11620853. The next prime is 11620901. The reversal of 11620889 is 98802611.

It can be written as a sum of positive squares in only one way, i.e., 11526025 + 94864 = 3395^2 + 308^2 .

It is not a de Polignac number, because 11620889 - 2⁸ = 11620633 is a prime.

It is a super-2 number, since 2×11620889² = 270090122300642, 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 (11620289) 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, 118532 + ... + 118629.

It is an arithmetic number, because the mean of its divisors is an integer number (2253039).

Almost surely, 2^11620889 is an apocalyptic number.

It is an amenable number.

11620889 is a deficient number, since it is larger than the sum of its proper divisors (1897345).

11620889 is an equidigital number, since it uses as much as digits as its factorization.

11620889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 237175 (or 237168 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 35.

The square root of 11620889 is about 3408.9425046486. The cubic root of 11620889 is about 226.5060383981.

The spelling of 11620889 in words is "eleven million, six hundred twenty thousand, eight hundred eighty-nine".