2087640099 has 24 divisors (see below), whose sum is σ = 3124353024. Its totient is φ = 1341846000.

The previous prime is 2087640077. The next prime is 2087640109. The reversal of 2087640099 is 9900467802.

It is a happy number.

It is not a de Polignac number, because 2087640099 - 2⁷ = 2087639971 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2087640199) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 61804 + ... + 89414.

It is an arithmetic number, because the mean of its divisors is an integer number (130181376).

Almost surely, 2^2087640099 is an apocalyptic number.

2087640099 is a deficient number, since it is larger than the sum of its proper divisors (1036712925).

2087640099 is a wasteful number, since it uses less digits than its factorization.

2087640099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27919 (or 27916 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 45.

The square root of 2087640099 is about 45690.7003557617. The cubic root of 2087640099 is about 1278.0618656085.

The spelling of 2087640099 in words is "two billion, eighty-seven million, six hundred forty thousand, ninety-nine".