2664090 has 160 divisors (see below), whose sum is σ = 8781696. Its totient is φ = 570240.

The previous prime is 2664089. The next prime is 2664097. The reversal of 2664090 is 904662.

2664090 is an esthetic number in base 8, because in such base its adjacent digits differ by 1.

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 (2664097) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 115819 + ... + 115841.

2^2664090 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2664090, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4390848).

2664090 is an abundant number, since it is smaller than the sum of its proper divisors (6117606).

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

2664090 is a wasteful number, since it uses less digits than its factorization.

2664090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 66 (or 57 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 2664090 is about 1632.2040313637. The cubic root of 2664090 is about 138.6275764548.

It can be divided in two parts, 266 and 4090, that added together give a square (4356 = 66²).

The spelling of 2664090 in words is "two million, six hundred sixty-four thousand, ninety".