612408 has 64 divisors (see below), whose sum is σ = 1728000. Its totient is φ = 179712.

The previous prime is 612407. The next prime is 612439. The reversal of 612408 is 804216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (612401) 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, 7713 + ... + 7791.

It is an arithmetic number, because the mean of its divisors is an integer number (27000).

2⁶¹²⁴⁰⁸ is an apocalyptic number.

612408 is a gapful number since it is divisible by the number (68) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 612408, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (864000).

612408 is an abundant number, since it is smaller than the sum of its proper divisors (1115592).

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

612408 is a wasteful number, since it uses less digits than its factorization.

612408 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 120 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 612408 is about 782.5650132737. The cubic root of 612408 is about 84.9207103738.

The spelling of 612408 in words is "six hundred twelve thousand, four hundred eight".