7988667 has 8 divisors (see below), whose sum is σ = 10780224. Its totient is φ = 5261448.

The previous prime is 7988663. The next prime is 7988689. The reversal of 7988667 is 7668897.

It is a happy number.

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

It is not a de Polignac number, because 7988667 - 2² = 7988663 is a prime.

It is not an unprimeable number, because it can be changed into a prime (7988663) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15793 + ... + 16290.

It is an arithmetic number, because the mean of its divisors is an integer number (1347528).

Almost surely, 2^7988667 is an apocalyptic number.

7988667 is a deficient number, since it is larger than the sum of its proper divisors (2791557).

7988667 is a wasteful number, since it uses less digits than its factorization.

7988667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32169.

The product of its digits is 1016064, while the sum is 51.

The square root of 7988667 is about 2826.4230044351. The cubic root of 7988667 is about 199.9055137021.

The spelling of 7988667 in words is "seven million, nine hundred eighty-eight thousand, six hundred sixty-seven".