7997487 has 8 divisors (see below), whose sum is σ = 10676400. Its totient is φ = 5325120.

The previous prime is 7997477. The next prime is 7997489. The reversal of 7997487 is 7847997.

7997487 is nontrivially palindromic in base 2.

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

It is not a de Polignac number, because 7997487 - 2⁴ = 7997471 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7997489) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3787 + ... + 5507.

It is an arithmetic number, because the mean of its divisors is an integer number (1334550).

Almost surely, 2^7997487 is an apocalyptic number.

7997487 is a deficient number, since it is larger than the sum of its proper divisors (2678913).

7997487 is a wasteful number, since it uses less digits than its factorization.

7997487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3273.

The product of its digits is 889056, while the sum is 51.

The square root of 7997487 is about 2827.9828500187. The cubic root of 7997487 is about 199.9790561402.

The spelling of 7997487 in words is "seven million, nine hundred ninety-seven thousand, four hundred eighty-seven".