6615998 has 8 divisors (see below), whose sum is σ = 9966240. Its totient is φ = 3293920.

The previous prime is 6615979. The next prime is 6616003. The reversal of 6615998 is 8995166.

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

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6443 + ... + 7398.

It is an arithmetic number, because the mean of its divisors is an integer number (1245780).

Almost surely, 2^6615998 is an apocalyptic number.

6615998 is a deficient number, since it is larger than the sum of its proper divisors (3350242).

6615998 is a wasteful number, since it uses less digits than its factorization.

6615998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14082.

The product of its digits is 116640, while the sum is 44.

The square root of 6615998 is about 2572.1582377451. The cubic root of 6615998 is about 187.7291822736.

The spelling of 6615998 in words is "six million, six hundred fifteen thousand, nine hundred ninety-eight".