1386533 has 4 divisors (see below), whose sum is σ = 1412748. Its totient is φ = 1360320.

The previous prime is 1386499. The next prime is 1386551. The reversal of 1386533 is 3356831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3356831 = 233 ⋅14407.

It can be written as a sum of positive squares in 2 ways, for example, as 669124 + 717409 = 818^2 + 847^2 .

It is a cyclic number.

It is not a de Polignac number, because 1386533 - 2²⁰ = 337957 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1386496 and 1386505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1386733) 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, 13028 + ... + 13133.

It is an arithmetic number, because the mean of its divisors is an integer number (353187).

2^1386533 is an apocalyptic number.

It is an amenable number.

1386533 is a deficient number, since it is larger than the sum of its proper divisors (26215).

1386533 is an equidigital number, since it uses as much as digits as its factorization.

1386533 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26214.

The product of its digits is 6480, while the sum is 29.

The square root of 1386533 is about 1177.5113587563. The cubic root of 1386533 is about 111.5090382587.

The spelling of 1386533 in words is "one million, three hundred eighty-six thousand, five hundred thirty-three".