1365506 has 8 divisors (see below), whose sum is σ = 2057484. Its totient is φ = 679680.

The previous prime is 1365503. The next prime is 1365547. The reversal of 1365506 is 6055631.

It can be written as a sum of positive squares in 2 ways, for example, as 1357225 + 8281 = 1165^2 + 91^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1365503) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 935 + ... + 1898.

2^1365506 is an apocalyptic number.

1365506 is a deficient number, since it is larger than the sum of its proper divisors (691978).

1365506 is a wasteful number, since it uses less digits than its factorization.

1365506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3076.

The product of its (nonzero) digits is 2700, while the sum is 26.

The square root of 1365506 is about 1168.5486724994. The cubic root of 1365506 is about 110.9424802763.

The spelling of 1365506 in words is "one million, three hundred sixty-five thousand, five hundred six".