6999401 has 8 divisors (see below), whose sum is σ = 7263624. Its totient is φ = 6739200.

The previous prime is 6999389. The next prime is 6999409. The reversal of 6999401 is 1049996.

It can be written as a sum of positive squares in 4 ways, for example, as 2247001 + 4752400 = 1499^2 + 2180^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6999401 - 2¹⁰ = 6998377 is a prime.

It is a super-2 number, since 2×6999401² = 97983228717602, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6999409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2801 + ... + 4673.

It is an arithmetic number, because the mean of its divisors is an integer number (907953).

Almost surely, 2^6999401 is an apocalyptic number.

It is an amenable number.

6999401 is a deficient number, since it is larger than the sum of its proper divisors (264223).

6999401 is a wasteful number, since it uses less digits than its factorization.

6999401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2011.

The product of its (nonzero) digits is 17496, while the sum is 38.

The square root of 6999401 is about 2645.6381082831. The cubic root of 6999401 is about 191.2876617131.

The spelling of 6999401 in words is "six million, nine hundred ninety-nine thousand, four hundred one".