6990530 has 8 divisors (see below), whose sum is σ = 12582972. Its totient is φ = 2796208.

The previous prime is 6990527. The next prime is 6990547. The reversal of 6990530 is 350996.

It can be written as a sum of positive squares in 2 ways, for example, as 6901129 + 89401 = 2627^2 + 299^2 .

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

It is an Ulam number.

It is an unprimeable number.

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, 349517 + ... + 349536.

Almost surely, 2^6990530 is an apocalyptic number.

6990530 is a deficient number, since it is larger than the sum of its proper divisors (5592442).

6990530 is a wasteful number, since it uses less digits than its factorization.

6990530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 699060.

The product of its (nonzero) digits is 7290, while the sum is 32.

The square root of 6990530 is about 2643.9610435859. The cubic root of 6990530 is about 191.2068152598.

The spelling of 6990530 in words is "six million, nine hundred ninety thousand, five hundred thirty".