2663091 has 16 divisors (see below), whose sum is σ = 4021920. Its totient is φ = 1740960.

The previous prime is 2663081. The next prime is 2663107. The reversal of 2663091 is 1903662.

It is a happy number.

2663091 is a `hidden beast` number, since 26 + 630 + 9 + 1 = 666.

It is not a de Polignac number, because 2663091 - 2⁶ = 2663027 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

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 (2663051) 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, 501 + ... + 2361.

It is an arithmetic number, because the mean of its divisors is an integer number (251370).

2^2663091 is an apocalyptic number.

2663091 is a deficient number, since it is larger than the sum of its proper divisors (1358829).

2663091 is a wasteful number, since it uses less digits than its factorization.

2663091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1923 (or 1917 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 2663091 is about 1631.8979747521. The cubic root of 2663091 is about 138.6102464268.

The spelling of 2663091 in words is "two million, six hundred sixty-three thousand, ninety-one".