2621279 has 2 divisors, whose sum is σ = 2621280. Its totient is φ = 2621278.

The previous prime is 2621263. The next prime is 2621303. The reversal of 2621279 is 9721262.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2621279 - 2⁴ = 2621263 is a prime.

It is a super-2 number, since 2×2621279² = 13742207191682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2621219) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1310639 + 1310640.

It is an arithmetic number, because the mean of its divisors is an integer number (1310640).

2^2621279 is an apocalyptic number.

2621279 is a deficient number, since it is larger than the sum of its proper divisors (1).

2621279 is an equidigital number, since it uses as much as digits as its factorization.

2621279 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 2621279 is about 1619.0364418382. The cubic root of 2621279 is about 137.8809973179.

The spelling of 2621279 in words is "two million, six hundred twenty-one thousand, two hundred seventy-nine".