4979815687 has 8 divisors (see below), whose sum is σ = 6208601472. Its totient is φ = 3880375800.

The previous prime is 4979815651. The next prime is 4979815733. The reversal of 4979815687 is 7865189794.

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

It is a de Polignac number, because none of the positive numbers 2^k-4979815687 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 (4979815387) 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, 32336389 + ... + 32336542.

It is an arithmetic number, because the mean of its divisors is an integer number (776075184).

Almost surely, 2^4979815687 is an apocalyptic number.

4979815687 is a deficient number, since it is larger than the sum of its proper divisors (1228785785).

4979815687 is a wasteful number, since it uses less digits than its factorization.

4979815687 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64672949.

The product of its digits is 30481920, while the sum is 64.

The square root of 4979815687 is about 70567.8091412791. The cubic root of 4979815687 is about 1707.6718641529.

The spelling of 4979815687 in words is "four billion, nine hundred seventy-nine million, eight hundred fifteen thousand, six hundred eighty-seven".