7971087 has 8 divisors (see below), whose sum is σ = 11090304. Its totient is φ = 5082968.

The previous prime is 7971031. The next prime is 7971091. The reversal of 7971087 is 7801797.

It is a happy number.

7971087 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

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 7971087 - 2¹⁶ = 7905551 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7971017) 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, 57693 + ... + 57830.

It is an arithmetic number, because the mean of its divisors is an integer number (1386288).

Almost surely, 2^7971087 is an apocalyptic number.

7971087 is a deficient number, since it is larger than the sum of its proper divisors (3119217).

7971087 is a wasteful number, since it uses less digits than its factorization.

7971087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115549.

The product of its (nonzero) digits is 24696, while the sum is 39.

The square root of 7971087 is about 2823.3113537122. The cubic root of 7971087 is about 199.7587674847.

It can be divided in two parts, 79710 and 87, that added together give a palindrome (79797).

The spelling of 7971087 in words is "seven million, nine hundred seventy-one thousand, eighty-seven".