2087664515 has 16 divisors (see below), whose sum is σ = 2662168032. Its totient is φ = 1566196224.

The previous prime is 2087664511. The next prime is 2087664533. The reversal of 2087664515 is 5154667802.

It is a cyclic number.

It is not a de Polignac number, because 2087664515 - 2² = 2087664511 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2087664511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20789 + ... + 67878.

It is an arithmetic number, because the mean of its divisors is an integer number (166385502).

Almost surely, 2^2087664515 is an apocalyptic number.

2087664515 is a deficient number, since it is larger than the sum of its proper divisors (574503517).

2087664515 is a wasteful number, since it uses less digits than its factorization.

2087664515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88966.

The product of its (nonzero) digits is 403200, while the sum is 44.

The square root of 2087664515 is about 45690.9675428306. The cubic root of 2087664515 is about 1278.0668481144.

The spelling of 2087664515 in words is "two billion, eighty-seven million, six hundred sixty-four thousand, five hundred fifteen".