6993690 has 32 divisors (see below), whose sum is σ = 18311616. Its totient is φ = 1695360.

The previous prime is 6993689. The next prime is 6993719. The reversal of 6993690 is 963996.

It is a super-2 number, since 2×6993690² = 97823399632200, which contains 22 as substring.

It is an Ulam number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 10267 + ... + 10926.

It is an arithmetic number, because the mean of its divisors is an integer number (572238).

Almost surely, 2^6993690 is an apocalyptic number.

6993690 is an abundant number, since it is smaller than the sum of its proper divisors (11317926).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6993690 is a wasteful number, since it uses less digits than its factorization.

6993690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21214.

The product of its (nonzero) digits is 78732, while the sum is 42.

The square root of 6993690 is about 2644.5585642976. The cubic root of 6993690 is about 191.2356219701.

The spelling of 6993690 in words is "six million, nine hundred ninety-three thousand, six hundred ninety".