6998261801 has 2 divisors, whose sum is σ = 6998261802. Its totient is φ = 6998261800.

The previous prime is 6998261737. The next prime is 6998261843. The reversal of 6998261801 is 1081628996.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6285318400 + 712943401 = 79280^2 + 26701^2 .

It is a cyclic number.

It is not a de Polignac number, because 6998261801 - 2⁶ = 6998261737 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 6998261801.

It is not a weakly prime, because it can be changed into another prime (6998261401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3499130900 + 3499130901.

It is an arithmetic number, because the mean of its divisors is an integer number (3499130901).

Almost surely, 2^6998261801 is an apocalyptic number.

It is an amenable number.

6998261801 is a deficient number, since it is larger than the sum of its proper divisors (1).

6998261801 is an equidigital number, since it uses as much as digits as its factorization.

6998261801 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 373248, while the sum is 50.

The square root of 6998261801 is about 83655.6142826051. The cubic root of 6998261801 is about 1912.7728337092.

The spelling of 6998261801 in words is "six billion, nine hundred ninety-eight million, two hundred sixty-one thousand, eight hundred one".