2622987 has 6 divisors (see below), whose sum is σ = 3788772. Its totient is φ = 1748652.

The previous prime is 2622959. The next prime is 2623039. The reversal of 2622987 is 7892262.

It is not a de Polignac number, because 2622987 - 2⁶ = 2622923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2622937) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 145713 + ... + 145730.

It is an arithmetic number, because the mean of its divisors is an integer number (631462).

2^2622987 is an apocalyptic number.

2622987 is a deficient number, since it is larger than the sum of its proper divisors (1165785).

2622987 is a wasteful number, since it uses less digits than its factorization.

2622987 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 291449 (or 291446 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 2622987 is about 1619.5638301716. The cubic root of 2622987 is about 137.9109381231.

It can be divided in two parts, 262 and 2987, that added together give a square (3249 = 57²).

The spelling of 2622987 in words is "two million, six hundred twenty-two thousand, nine hundred eighty-seven".