1366650 has 36 divisors (see below), whose sum is σ = 3672942. Its totient is φ = 364320.

The previous prime is 1366649. The next prime is 1366657. The reversal of 1366650 is 566631.

It can be written as a sum of positive squares in 3 ways, for example, as 1212201 + 154449 = 1101^2 + 393^2 .

It is not an unprimeable number, because it can be changed into a prime (1366657) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 1069 + ... + 1968.

2^1366650 is an apocalyptic number.

1366650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1366650 is an abundant number, since it is smaller than the sum of its proper divisors (2306292).

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

1366650 is a wasteful number, since it uses less digits than its factorization.

1366650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3055 (or 3047 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 1366650 is about 1169.0380661039. The cubic root of 1366650 is about 110.9734535982.

It can be divided in two parts, 1366 and 650, that added together give a triangular number (2016 = T₆₃).

The spelling of 1366650 in words is "one million, three hundred sixty-six thousand, six hundred fifty".