610987 has 8 divisors (see below), whose sum is σ = 673904. Its totient is φ = 550368.

The previous prime is 610969. The next prime is 610993. The reversal of 610987 is 789016.

610987 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a de Polignac number, because none of the positive numbers 2^k-610987 is a prime.

It is a super-2 number, since 2×610987² = 746610228338, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

610987 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (610957) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13 + ... + 1105.

It is an arithmetic number, because the mean of its divisors is an integer number (84238).

2⁶¹⁰⁹⁸⁷ is an apocalyptic number.

610987 is a deficient number, since it is larger than the sum of its proper divisors (62917).

610987 is a wasteful number, since it uses less digits than its factorization.

610987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1149.

The product of its (nonzero) digits is 3024, while the sum is 31.

The square root of 610987 is about 781.6565742063. The cubic root of 610987 is about 84.8549776249.

The spelling of 610987 in words is "six hundred ten thousand, nine hundred eighty-seven".