612780 has 48 divisors (see below), whose sum is σ = 1962240. Its totient is φ = 139968.

The previous prime is 612763. The next prime is 612791. The reversal of 612780 is 87216.

612780 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 612780.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 310 + ... + 1149.

It is an arithmetic number, because the mean of its divisors is an integer number (40880).

2⁶¹²⁷⁸⁰ is an apocalyptic number.

612780 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

612780 is an abundant number, since it is smaller than the sum of its proper divisors (1349460).

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

612780 is a wasteful number, since it uses less digits than its factorization.

612780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1478 (or 1476 counting only the distinct ones).

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

The square root of 612780 is about 782.8026571237. The cubic root of 612780 is about 84.9379015873.

Adding to 612780 its reverse (87216), we get a palindrome (699996).

The spelling of 612780 in words is "six hundred twelve thousand, seven hundred eighty".