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1380623 is a prime number
BaseRepresentation
bin101010001000100001111
32121010212012
411101010033
5323134443
645331435
714510066
oct5210417
92533765
101380623
11863312
12566b7b
1339454a
1427d1dd
151c4118
hex15110f

1380623 has 2 divisors, whose sum is σ = 1380624. Its totient is φ = 1380622.

The previous prime is 1380619. The next prime is 1380629. The reversal of 1380623 is 3260831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1380623 - 22 = 1380619 is a prime.

It is a super-2 number, since 2×13806232 = 3812239736258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1380629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 690311 + 690312.

It is an arithmetic number, because the mean of its divisors is an integer number (690312).

21380623 is an apocalyptic number.

1380623 is a deficient number, since it is larger than the sum of its proper divisors (1).

1380623 is an equidigital number, since it uses as much as digits as its factorization.

1380623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1380623 is about 1174.9991489359. Note that the first 3 decimals coincide. The cubic root of 1380623 is about 111.3503794601.

The spelling of 1380623 in words is "one million, three hundred eighty thousand, six hundred twenty-three".