612987 has 4 divisors (see below), whose sum is σ = 817320. Its totient is φ = 408656.

The previous prime is 612977. The next prime is 613007. The reversal of 612987 is 789216.

612987 is digitally balanced in base 7, 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 612987 - 2⁴ = 612971 is a prime.

It is a D-number.

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

612987 is strictly pandigital in base 7.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 612987.

It is not an unprimeable number, because it can be changed into a prime (612947) 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, 102162 + ... + 102167.

It is an arithmetic number, because the mean of its divisors is an integer number (204330).

2⁶¹²⁹⁸⁷ is an apocalyptic number.

612987 is a deficient number, since it is larger than the sum of its proper divisors (204333).

612987 is a wasteful number, since it uses less digits than its factorization.

612987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 204332.

The product of its digits is 6048, while the sum is 33.

The square root of 612987 is about 782.9348631911. The cubic root of 612987 is about 84.9474646530.

It can be divided in two parts, 6129 and 87, that added together give a triangular number (6216 = T₁₁₁).

The spelling of 612987 in words is "six hundred twelve thousand, nine hundred eighty-seven".