1380650 has 24 divisors (see below), whose sum is σ = 2621484. Its totient is φ = 540800.

The previous prime is 1380637. The next prime is 1380653. The reversal of 1380650 is 560831.

It can be written as a sum of positive squares in 6 ways, for example, as 502681 + 877969 = 709^2 + 937^2 .

It is a hoax number, since the sum of its digits (23) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1380653) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2390 + ... + 2910.

2^1380650 is an apocalyptic number.

1380650 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1380650 is a deficient number, since it is larger than the sum of its proper divisors (1240834).

1380650 is a wasteful number, since it uses less digits than its factorization.

1380650 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586 (or 581 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 23.

The square root of 1380650 is about 1175.0106382497. The cubic root of 1380650 is about 111.3511053258.

The spelling of 1380650 in words is "one million, three hundred eighty thousand, six hundred fifty".