6993813 has 4 divisors (see below), whose sum is σ = 9325088. Its totient is φ = 4662540.

The previous prime is 6993799. The next prime is 6993823. The reversal of 6993813 is 3183996.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 6993813 - 2⁵ = 6993781 is a prime.

It is a D-number.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6993823) 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, 1165633 + ... + 1165638.

It is an arithmetic number, because the mean of its divisors is an integer number (2331272).

Almost surely, 2^6993813 is an apocalyptic number.

It is an amenable number.

6993813 is a deficient number, since it is larger than the sum of its proper divisors (2331275).

6993813 is a wasteful number, since it uses less digits than its factorization.

6993813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2331274.

The product of its digits is 34992, while the sum is 39.

The square root of 6993813 is about 2644.5818194943. The cubic root of 6993813 is about 191.2367430684.

The spelling of 6993813 in words is "six million, nine hundred ninety-three thousand, eight hundred thirteen".