2626649 has 2 divisors, whose sum is σ = 2626650. Its totient is φ = 2626648.

The previous prime is 2626643. The next prime is 2626691. The reversal of 2626649 is 9466262.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1545049 + 1081600 = 1243^2 + 1040^2 .

It is a cyclic number.

It is not a de Polignac number, because 2626649 - 2⁴ = 2626633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (2626643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313324 + 1313325.

It is an arithmetic number, because the mean of its divisors is an integer number (1313325).

2^2626649 is an apocalyptic number.

It is an amenable number.

2626649 is a deficient number, since it is larger than the sum of its proper divisors (1).

2626649 is an equidigital number, since it uses as much as digits as its factorization.

2626649 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31104, while the sum is 35.

The square root of 2626649 is about 1620.6939871549. The cubic root of 2626649 is about 137.9750882708.

The spelling of 2626649 in words is "two million, six hundred twenty-six thousand, six hundred forty-nine".