6990420 has 24 divisors (see below), whose sum is σ = 19573344. Its totient is φ = 1864096.

The previous prime is 6990419. The next prime is 6990427. The reversal of 6990420 is 240996.

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990427) 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 7 ways as a sum of consecutive naturals, for example, 58194 + ... + 58313.

It is an arithmetic number, because the mean of its divisors is an integer number (815556).

Almost surely, 2^6990420 is an apocalyptic number.

6990420 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

6990420 is an abundant number, since it is smaller than the sum of its proper divisors (12582924).

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

6990420 is a wasteful number, since it uses less digits than its factorization.

6990420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116519 (or 116517 counting only the distinct ones).

The product of its (nonzero) digits is 3888, while the sum is 30.

The square root of 6990420 is about 2643.9402413822. The cubic root of 6990420 is about 191.2058123383.

The spelling of 6990420 in words is "six million, nine hundred ninety thousand, four hundred twenty".