6972509 has 2 divisors, whose sum is σ = 6972510. Its totient is φ = 6972508.

The previous prime is 6972491. The next prime is 6972517. The reversal of 6972509 is 9052796.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5508409 + 1464100 = 2347^2 + 1210^2 .

It is a cyclic number.

It is not a de Polignac number, because 6972509 - 2⁸ = 6972253 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6972569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3486254 + 3486255.

It is an arithmetic number, because the mean of its divisors is an integer number (3486255).

Almost surely, 2^6972509 is an apocalyptic number.

It is an amenable number.

6972509 is a deficient number, since it is larger than the sum of its proper divisors (1).

6972509 is an equidigital number, since it uses as much as digits as its factorization.

6972509 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 34020, while the sum is 38.

The square root of 6972509 is about 2640.5508894926. The cubic root of 6972509 is about 191.0423688251.

The spelling of 6972509 in words is "six million, nine hundred seventy-two thousand, five hundred nine".