6610987 has 4 divisors (see below), whose sum is σ = 6622096. Its totient is φ = 6599880.

The previous prime is 6610951. The next prime is 6610991. The reversal of 6610987 is 7890166.

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 6610987 - 2⁷ = 6610859 is a prime.

It is a super-2 number, since 2×6610987² = 87410298228338, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6610907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4608 + ... + 5869.

It is an arithmetic number, because the mean of its divisors is an integer number (1655524).

Almost surely, 2^6610987 is an apocalyptic number.

6610987 is a deficient number, since it is larger than the sum of its proper divisors (11109).

6610987 is a wasteful number, since it uses less digits than its factorization.

6610987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11108.

The product of its (nonzero) digits is 18144, while the sum is 37.

The square root of 6610987 is about 2571.1839685250. The cubic root of 6610987 is about 187.6817745340.

The spelling of 6610987 in words is "six million, six hundred ten thousand, nine hundred eighty-seven".