6985579 has 2 divisors, whose sum is σ = 6985580. Its totient is φ = 6985578.

The previous prime is 6985553. The next prime is 6985603. The reversal of 6985579 is 9755896.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6985579 - 2¹¹ = 6983531 is a prime.

6985579 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (6985519) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3492789 + 3492790.

It is an arithmetic number, because the mean of its divisors is an integer number (3492790).

Almost surely, 2^6985579 is an apocalyptic number.

6985579 is a deficient number, since it is larger than the sum of its proper divisors (1).

6985579 is an equidigital number, since it uses as much as digits as its factorization.

6985579 is an evil number, because the sum of its binary digits is even.

The product of its digits is 680400, while the sum is 49.

The square root of 6985579 is about 2643.0245931508. The cubic root of 6985579 is about 191.1616642474.

The spelling of 6985579 in words is "six million, nine hundred eighty-five thousand, five hundred seventy-nine".