8638487 has 16 divisors (see below), whose sum is σ = 10233888. Its totient is φ = 7188480.

The previous prime is 8638481. The next prime is 8638517. The reversal of 8638487 is 7848368.

It is a happy number.

It is not a de Polignac number, because 8638487 - 2⁴ = 8638471 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 (8638481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27443 + ... + 27755.

It is an arithmetic number, because the mean of its divisors is an integer number (639618).

Almost surely, 2^8638487 is an apocalyptic number.

8638487 is a deficient number, since it is larger than the sum of its proper divisors (1595401).

8638487 is a wasteful number, since it uses less digits than its factorization.

8638487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530.

The product of its digits is 258048, while the sum is 44.

The square root of 8638487 is about 2939.1303135451. The cubic root of 8638487 is about 205.1851351538.

The spelling of 8638487 in words is "eight million, six hundred thirty-eight thousand, four hundred eighty-seven".