6990655279 has 8 divisors (see below), whose sum is σ = 7252428800. Its totient is φ = 6731148600.

The previous prime is 6990655277. The next prime is 6990655303. The reversal of 6990655279 is 9725560996.

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

It is a cyclic number.

It is not a de Polignac number, because 6990655279 - 2¹ = 6990655277 is a prime.

It is a super-2 number, since 2×6990655279² = 97738522459621135682, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990655277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 560427 + ... + 572764.

It is an arithmetic number, because the mean of its divisors is an integer number (906553600).

Almost surely, 2^6990655279 is an apocalyptic number.

6990655279 is a deficient number, since it is larger than the sum of its proper divisors (261773521).

6990655279 is a wasteful number, since it uses less digits than its factorization.

6990655279 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1133421.

The product of its (nonzero) digits is 9185400, while the sum is 58.

The square root of 6990655279 is about 83610.1386136873. The cubic root of 6990655279 is about 1912.0795747440.

The spelling of 6990655279 in words is "six billion, nine hundred ninety million, six hundred fifty-five thousand, two hundred seventy-nine".