2170687963 has 4 divisors (see below), whose sum is σ = 2170820520. Its totient is φ = 2170555408.

The previous prime is 2170687943. The next prime is 2170687973. The reversal of 2170687963 is 3697860712.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2170687963 - 2¹⁷ = 2170556891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2170687913) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37570 + ... + 75847.

It is an arithmetic number, because the mean of its divisors is an integer number (542705130).

Almost surely, 2^2170687963 is an apocalyptic number.

2170687963 is a deficient number, since it is larger than the sum of its proper divisors (132557).

2170687963 is a wasteful number, since it uses less digits than its factorization.

2170687963 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 132556.

The product of its (nonzero) digits is 762048, while the sum is 49.

The square root of 2170687963 is about 46590.6424403012. The cubic root of 2170687963 is about 1294.7893920658.

The spelling of 2170687963 in words is "two billion, one hundred seventy million, six hundred eighty-seven thousand, nine hundred sixty-three".