612870 has 32 divisors (see below), whose sum is σ = 1520640. Its totient is φ = 157920.

The previous prime is 612869. The next prime is 612877. The reversal of 612870 is 78216.

It is a self number, because there is not a number n which added to its sum of digits gives 612870.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612877) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 601 + ... + 1259.

It is an arithmetic number, because the mean of its divisors is an integer number (47520).

2⁶¹²⁸⁷⁰ is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612870, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (760320).

612870 is an abundant number, since it is smaller than the sum of its proper divisors (907770).

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

612870 is a wasteful number, since it uses less digits than its factorization.

612870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 700.

The product of its (nonzero) digits is 672, while the sum is 24.

The square root of 612870 is about 782.8601407659. The cubic root of 612870 is about 84.9420597066.

The spelling of 612870 in words is "six hundred twelve thousand, eight hundred seventy".