6999744 has 28 divisors (see below), whose sum is σ = 18520664. Its totient is φ = 2333184.

The previous prime is 6999731. The next prime is 6999749. The reversal of 6999744 is 4479996.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a junction number, because it is equal to n+sod(n) for n = 6999693 and 6999702.

It is not an unprimeable number, because it can be changed into a prime (6999749) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18037 + ... + 18420.

Almost surely, 2^6999744 is an apocalyptic number.

6999744 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

6999744 is an abundant number, since it is smaller than the sum of its proper divisors (11520920).

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

6999744 is a wasteful number, since it uses less digits than its factorization.

6999744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36472 (or 36462 counting only the distinct ones).

The product of its digits is 489888, while the sum is 48.

The square root of 6999744 is about 2645.7029311697. The cubic root of 6999744 is about 191.2907862946.

The spelling of 6999744 in words is "six million, nine hundred ninety-nine thousand, seven hundred forty-four".