2661090 has 32 divisors (see below), whose sum is σ = 6454080. Its totient is φ = 702144.

The previous prime is 2661089. The next prime is 2661097. The reversal of 2661090 is 901662.

It is a self number, because there is not a number n which added to its sum of digits gives 2661090.

It is not an unprimeable number, because it can be changed into a prime (2661097) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2796 + ... + 3624.

It is an arithmetic number, because the mean of its divisors is an integer number (201690).

2^2661090 is an apocalyptic number.

2661090 is an abundant number, since it is smaller than the sum of its proper divisors (3792990).

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

2661090 is a wasteful number, since it uses less digits than its factorization.

2661090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946.

The product of its (nonzero) digits is 648, while the sum is 24.

The square root of 2661090 is about 1631.2847697444. The cubic root of 2661090 is about 138.5755212897.

It can be divided in two parts, 26 and 61090, that added together give a palindrome (61116).

The spelling of 2661090 in words is "two million, six hundred sixty-one thousand, ninety".