2699987 has 4 divisors (see below), whose sum is σ = 2793120. Its totient is φ = 2606856.

The previous prime is 2699981. The next prime is 2699989. The reversal of 2699987 is 7899962.

2699987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 2699987 - 2⁴ = 2699971 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2699981) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 46523 + ... + 46580.

It is an arithmetic number, because the mean of its divisors is an integer number (698280).

2^2699987 is an apocalyptic number.

2699987 is a deficient number, since it is larger than the sum of its proper divisors (93133).

2699987 is an equidigital number, since it uses as much as digits as its factorization.

2699987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93132.

The product of its digits is 489888, while the sum is 50.

The square root of 2699987 is about 1643.1637167367. The cubic root of 2699987 is about 139.2474415241.

The spelling of 2699987 in words is "two million, six hundred ninety-nine thousand, nine hundred eighty-seven".