2627921 has 2 divisors, whose sum is σ = 2627922. Its totient is φ = 2627920.

The previous prime is 2627897. The next prime is 2627929. The reversal of 2627921 is 1297262.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1597696 + 1030225 = 1264^2 + 1015^2 .

It is a cyclic number.

It is not a de Polignac number, because 2627921 - 2⁶ = 2627857 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2627929) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1313960 + 1313961.

It is an arithmetic number, because the mean of its divisors is an integer number (1313961).

2^2627921 is an apocalyptic number.

It is an amenable number.

2627921 is a deficient number, since it is larger than the sum of its proper divisors (1).

2627921 is an equidigital number, since it uses as much as digits as its factorization.

2627921 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3024, while the sum is 29.

The square root of 2627921 is about 1621.0863641398. The cubic root of 2627921 is about 137.9973569472.

The spelling of 2627921 in words is "two million, six hundred twenty-seven thousand, nine hundred twenty-one".