2663890 has 16 divisors (see below), whose sum is σ = 4813632. Its totient is φ = 1061424.

The previous prime is 2663887. The next prime is 2663897. The reversal of 2663890 is 983662.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (2663897) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4597 + ... + 5143.

It is an arithmetic number, because the mean of its divisors is an integer number (300852).

2^2663890 is an apocalyptic number.

2663890 is a deficient number, since it is larger than the sum of its proper divisors (2149742).

2663890 is a wasteful number, since it uses less digits than its factorization.

2663890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1041.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 2663890 is about 1632.1427633635. The cubic root of 2663890 is about 138.6241073266.

It can be divided in two parts, 2663 and 890, that added together give a palindrome (3553).

The spelling of 2663890 in words is "two million, six hundred sixty-three thousand, eight hundred ninety".