2649811 has 2 divisors, whose sum is σ = 2649812. Its totient is φ = 2649810.

The previous prime is 2649799. The next prime is 2649821. The reversal of 2649811 is 1189462.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2649811 - 2⁹ = 2649299 is a prime.

2649811 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (2649821) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1324905 + 1324906.

It is an arithmetic number, because the mean of its divisors is an integer number (1324906).

2^2649811 is an apocalyptic number.

2649811 is a deficient number, since it is larger than the sum of its proper divisors (1).

2649811 is an equidigital number, since it uses as much as digits as its factorization.

2649811 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3456, while the sum is 31.

The square root of 2649811 is about 1627.8240076863. The cubic root of 2649811 is about 138.3794604322.

The spelling of 2649811 in words is "two million, six hundred forty-nine thousand, eight hundred eleven".