2649087287 has 32 divisors (see below), whose sum is σ = 3398920704. Its totient is φ = 2004912000.

The previous prime is 2649087263. The next prime is 2649087289. The reversal of 2649087287 is 7827809462.

It is a happy number.

It is not a de Polignac number, because 2649087287 - 2¹⁴ = 2649070903 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (53).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2649087289) 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, 408968 + ... + 415394.

It is an arithmetic number, because the mean of its divisors is an integer number (106216272).

Almost surely, 2^2649087287 is an apocalyptic number.

2649087287 is a deficient number, since it is larger than the sum of its proper divisors (749833417).

2649087287 is a wasteful number, since it uses less digits than its factorization.

2649087287 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6599.

The product of its (nonzero) digits is 2709504, while the sum is 53.

The square root of 2649087287 is about 51469.2848891453. The cubic root of 2649087287 is about 1383.6686127784.

The spelling of 2649087287 in words is "two billion, six hundred forty-nine million, eighty-seven thousand, two hundred eighty-seven".