2261660 has 12 divisors (see below), whose sum is σ = 4749528. Its totient is φ = 904656.

The previous prime is 2261653. The next prime is 2261689. The reversal of 2261660 is 661622.

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56522 + ... + 56561.

It is an arithmetic number, because the mean of its divisors is an integer number (395794).

2^2261660 is an apocalyptic number.

2261660 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2261660 is an abundant number, since it is smaller than the sum of its proper divisors (2487868).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2261660 is a wasteful number, since it uses less digits than its factorization.

2261660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113092 (or 113090 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 2261660 is about 1503.8816442792. The cubic root of 2261660 is about 131.2630342309.

The spelling of 2261660 in words is "two million, two hundred sixty-one thousand, six hundred sixty".