6631279 has 2 divisors, whose sum is σ = 6631280. Its totient is φ = 6631278.

The previous prime is 6631271. The next prime is 6631321. The reversal of 6631279 is 9721366.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 6631279 - 2³ = 6631271 is a prime.

It is a super-2 number, since 2×6631279² = 87947722351682, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6631271) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3315639 + 3315640.

It is an arithmetic number, because the mean of its divisors is an integer number (3315640).

Almost surely, 2^6631279 is an apocalyptic number.

6631279 is a deficient number, since it is larger than the sum of its proper divisors (1).

6631279 is an equidigital number, since it uses as much as digits as its factorization.

6631279 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 34.

The square root of 6631279 is about 2575.1269871601. The cubic root of 6631279 is about 187.8736041157.

The spelling of 6631279 in words is "six million, six hundred thirty-one thousand, two hundred seventy-nine".