7871487 has 8 divisors (see below), whose sum is σ = 11302704. Its totient is φ = 4843968.

The previous prime is 7871483. The next prime is 7871503. The reversal of 7871487 is 7841787.

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

It is not a de Polignac number, because 7871487 - 2² = 7871483 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7871483) 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, 100878 + ... + 100955.

It is an arithmetic number, because the mean of its divisors is an integer number (1412838).

Almost surely, 2^7871487 is an apocalyptic number.

7871487 is a deficient number, since it is larger than the sum of its proper divisors (3431217).

7871487 is a wasteful number, since it uses less digits than its factorization.

7871487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201849.

The product of its digits is 87808, while the sum is 42.

The square root of 7871487 is about 2805.6170444307. The cubic root of 7871487 is about 198.9232720201.

The spelling of 7871487 in words is "seven million, eight hundred seventy-one thousand, four hundred eighty-seven".