2779215087 has 32 divisors (see below), whose sum is σ = 4279207680. Its totient is φ = 1588446720.

The previous prime is 2779215059. The next prime is 2779215091. The reversal of 2779215087 is 7805129772.

It is a happy number.

It is not a de Polignac number, because 2779215087 - 2⁸ = 2779214831 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2779215287) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7383 + ... + 74919.

It is an arithmetic number, because the mean of its divisors is an integer number (133725240).

Almost surely, 2^2779215087 is an apocalyptic number.

2779215087 is a deficient number, since it is larger than the sum of its proper divisors (1499992593).

2779215087 is a wasteful number, since it uses less digits than its factorization.

2779215087 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67623.

The product of its (nonzero) digits is 493920, while the sum is 48.

The square root of 2779215087 is about 52718.2614186014. The cubic root of 2779215087 is about 1405.9635217400.

The spelling of 2779215087 in words is "two billion, seven hundred seventy-nine million, two hundred fifteen thousand, eighty-seven".