7988591 has 8 divisors (see below), whose sum is σ = 8653680. Its totient is φ = 7330752.

The previous prime is 7988587. The next prime is 7988597. The reversal of 7988591 is 1958897.

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 7988591 - 2² = 7988587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7988597) 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, 611 + ... + 4043.

It is an arithmetic number, because the mean of its divisors is an integer number (1081710).

Almost surely, 2^7988591 is an apocalyptic number.

7988591 is a deficient number, since it is larger than the sum of its proper divisors (665089).

7988591 is a wasteful number, since it uses less digits than its factorization.

7988591 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3625.

The product of its digits is 181440, while the sum is 47.

The square root of 7988591 is about 2826.4095598480. The cubic root of 7988591 is about 199.9048797679.

The spelling of 7988591 in words is "seven million, nine hundred eighty-eight thousand, five hundred ninety-one".