2691090 has 32 divisors (see below), whose sum is σ = 7176960. Its totient is φ = 717552.

The previous prime is 2691067. The next prime is 2691097. The reversal of 2691090 is 901962.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (2691097) 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, 4714 + ... + 5253.

It is an arithmetic number, because the mean of its divisors is an integer number (224280).

2^2691090 is an apocalyptic number.

2691090 is an abundant number, since it is smaller than the sum of its proper divisors (4485870).

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

2691090 is a wasteful number, since it uses less digits than its factorization.

2691090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9983 (or 9977 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 2691090 is about 1640.4542053956. The cubic root of 2691090 is about 139.0943237776.

It can be divided in two parts, 26910 and 90, that added together give a cube (27000 = 30³).

The spelling of 2691090 in words is "two million, six hundred ninety-one thousand, ninety".