1356678 has 48 divisors (see below), whose sum is σ = 3201120. Its totient is φ = 413952.

The previous prime is 1356671. The next prime is 1356689. The reversal of 1356678 is 8766531.

It is a plaindrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1356671) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 11950 + ... + 12062.

It is an arithmetic number, because the mean of its divisors is an integer number (66690).

2^1356678 is an apocalyptic number.

1356678 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1356678, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1600560).

1356678 is an abundant number, since it is smaller than the sum of its proper divisors (1844442).

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

1356678 is a wasteful number, since it uses less digits than its factorization.

1356678 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173 (or 170 counting only the distinct ones).

The product of its digits is 30240, while the sum is 36.

The square root of 1356678 is about 1164.7652123926. The cubic root of 1356678 is about 110.7028820523.

The spelling of 1356678 in words is "one million, three hundred fifty-six thousand, six hundred seventy-eight".