2087699478 has 32 divisors (see below), whose sum is σ = 4253057280. Its totient is φ = 683044320.

The previous prime is 2087699477. The next prime is 2087699513. The reversal of 2087699478 is 8749967802.

It is a super-2 number, since 2×2087699478² = 8716978220882944968, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2087699477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 85908 + ... + 107496.

It is an arithmetic number, because the mean of its divisors is an integer number (132908040).

Almost surely, 2^2087699478 is an apocalyptic number.

2087699478 is an abundant number, since it is smaller than the sum of its proper divisors (2165357802).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2087699478 is a wasteful number, since it uses less digits than its factorization.

2087699478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21892.

The product of its (nonzero) digits is 12192768, while the sum is 60.

The square root of 2087699478 is about 45691.3501442013. The cubic root of 2087699478 is about 1278.0739828498.

The spelling of 2087699478 in words is "two billion, eighty-seven million, six hundred ninety-nine thousand, four hundred seventy-eight".