6999481 has 2 divisors, whose sum is σ = 6999482. Its totient is φ = 6999480.

The previous prime is 6999463. The next prime is 6999491. The reversal of 6999481 is 1849996.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6843456 + 156025 = 2616^2 + 395^2 .

It is a cyclic number.

It is not a de Polignac number, because 6999481 - 2⁵ = 6999449 is a prime.

It is a super-2 number, since 2×6999481² = 97985468538722, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (6999431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3499740 + 3499741.

It is an arithmetic number, because the mean of its divisors is an integer number (3499741).

Almost surely, 2^6999481 is an apocalyptic number.

It is an amenable number.

6999481 is a deficient number, since it is larger than the sum of its proper divisors (1).

6999481 is an equidigital number, since it uses as much as digits as its factorization.

6999481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 46.

The square root of 6999481 is about 2645.6532274658. The cubic root of 6999481 is about 191.2883904876.

The spelling of 6999481 in words is "six million, nine hundred ninety-nine thousand, four hundred eighty-one".