2766631 has 16 divisors (see below), whose sum is σ = 3407616. Its totient is φ = 2192256.

The previous prime is 2766623. The next prime is 2766637. The reversal of 2766631 is 1366672.

It is a cyclic number.

It is not a de Polignac number, because 2766631 - 2³ = 2766623 is a prime.

It is a super-2 number, since 2×2766631² = 15308494180322, which contains 22 as substring.

It is an Ulam number.

2766631 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 2766593 and 2766602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2766637) 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, 7800 + ... + 8146.

It is an arithmetic number, because the mean of its divisors is an integer number (212976).

2^2766631 is an apocalyptic number.

2766631 is a deficient number, since it is larger than the sum of its proper divisors (640985).

2766631 is a wasteful number, since it uses less digits than its factorization.

2766631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 438.

The product of its digits is 9072, while the sum is 31.

The square root of 2766631 is about 1663.3192718177. The cubic root of 2766631 is about 140.3838276786.

The spelling of 2766631 in words is "two million, seven hundred sixty-six thousand, six hundred thirty-one".