6998729 has 4 divisors (see below), whose sum is σ = 7094676. Its totient is φ = 6902784.

The previous prime is 6998711. The next prime is 6998737. The reversal of 6998729 is 9278996.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4108729 + 2890000 = 2027^2 + 1700^2 .

It is a cyclic number.

It is not a de Polignac number, because 6998729 - 2⁸ = 6998473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6998749) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 47864 + ... + 48009.

It is an arithmetic number, because the mean of its divisors is an integer number (1773669).

Almost surely, 2^6998729 is an apocalyptic number.

It is an amenable number.

6998729 is a deficient number, since it is larger than the sum of its proper divisors (95947).

6998729 is an equidigital number, since it uses as much as digits as its factorization.

6998729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95946.

The product of its digits is 489888, while the sum is 50.

The square root of 6998729 is about 2645.5111037378. The cubic root of 6998729 is about 191.2815397882.

The spelling of 6998729 in words is "six million, nine hundred ninety-eight thousand, seven hundred twenty-nine".