4647987 has 18 divisors (see below), whose sum is σ = 7135908. Its totient is φ = 2914752.

The previous prime is 4647959. The next prime is 4648003. The reversal of 4647987 is 7897464.

It is not a de Polignac number, because 4647987 - 2²² = 453683 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

4647987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (4647947) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1708 + ... + 3494.

Almost surely, 2^4647987 is an apocalyptic number.

4647987 is a deficient number, since it is larger than the sum of its proper divisors (2487921).

4647987 is a wasteful number, since it uses less digits than its factorization.

4647987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1827 (or 1807 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 4647987 is about 2155.9190615605. The cubic root of 4647987 is about 166.8866645888.

The spelling of 4647987 in words is "four million, six hundred forty-seven thousand, nine hundred eighty-seven".