1356345 has 40 divisors (see below), whose sum is σ = 2587464. Its totient is φ = 677376.

The previous prime is 1356337. The next prime is 1356371. The reversal of 1356345 is 5436531.

It can be written as a sum of positive squares in 4 ways, for example, as 685584 + 670761 = 828^2 + 819^2 .

It is not a de Polignac number, because 1356345 - 2³ = 1356337 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 6787 + ... + 6983.

2^1356345 is an apocalyptic number.

1356345 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1356345 is a deficient number, since it is larger than the sum of its proper divisors (1231119).

1356345 is a wasteful number, since it uses less digits than its factorization.

1356345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231 (or 222 counting only the distinct ones).

The product of its digits is 5400, while the sum is 27.

The square root of 1356345 is about 1164.6222563561. The cubic root of 1356345 is about 110.6938238782.

The spelling of 1356345 in words is "one million, three hundred fifty-six thousand, three hundred forty-five".