2087668947 has 64 divisors (see below), whose sum is σ = 3621739520. Its totient is φ = 1038749184.

The previous prime is 2087668937. The next prime is 2087668951. The reversal of 2087668947 is 7498667802.

It is not a de Polignac number, because 2087668947 - 2¹⁸ = 2087406803 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is not an unprimeable number, because it can be changed into a prime (2087668927) 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 63 ways as a sum of consecutive naturals, for example, 1436073 + ... + 1437525.

It is an arithmetic number, because the mean of its divisors is an integer number (56589680).

Almost surely, 2^2087668947 is an apocalyptic number.

2087668947 is a deficient number, since it is larger than the sum of its proper divisors (1534070573).

2087668947 is a wasteful number, since it uses less digits than its factorization.

2087668947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1772.

The product of its (nonzero) digits is 8128512, while the sum is 57.

The square root of 2087668947 is about 45691.0160425439. The cubic root of 2087668947 is about 1278.0677525362.

The spelling of 2087668947 in words is "two billion, eighty-seven million, six hundred sixty-eight thousand, nine hundred forty-seven".