2790690 has 64 divisors (see below), whose sum is σ = 7789824. Its totient is φ = 626688.

The previous prime is 2790679. The next prime is 2790707. The reversal of 2790690 is 960972.

It is a super-2 number, since 2×2790690² = 15575901352200, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 20302 + ... + 20438.

It is an arithmetic number, because the mean of its divisors is an integer number (121716).

2^2790690 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2790690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3894912).

2790690 is an abundant number, since it is smaller than the sum of its proper divisors (4999134).

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

2790690 is a wasteful number, since it uses less digits than its factorization.

2790690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 2790690 is about 1670.5358421776. The cubic root of 2790690 is about 140.7895860604.

The spelling of 2790690 in words is "two million, seven hundred ninety thousand, six hundred ninety".