2087658 has 12 divisors (see below), whose sum is σ = 4523298. Its totient is φ = 695880.

The previous prime is 2087627. The next prime is 2087669. The reversal of 2087658 is 8567802.

It can be written as a sum of positive squares in only one way, i.e., 1830609 + 257049 = 1353^2 + 507^2 .

It is a d-powerful number, because it can be written as 2¹⁷ + 0 + 8³ + 7⁴ + 6² + 5⁹ + 8³ .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57973 + ... + 58008.

2^2087658 is an apocalyptic number.

2087658 is an abundant number, since it is smaller than the sum of its proper divisors (2435640).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2087658 is a wasteful number, since it uses less digits than its factorization.

2087658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115989 (or 115986 counting only the distinct ones).

The product of its (nonzero) digits is 26880, while the sum is 36.

The square root of 2087658 is about 1444.8730048001. The cubic root of 2087658 is about 127.8065518620.

It can be divided in two parts, 20 and 87658, that added together give a palindrome (87678).

The spelling of 2087658 in words is "two million, eighty-seven thousand, six hundred fifty-eight".