1621363 has 2 divisors, whose sum is σ = 1621364. Its totient is φ = 1621362.

The previous prime is 1621357. The next prime is 1621369. The reversal of 1621363 is 3631261.

It is a balanced prime because it is at equal distance from previous prime (1621357) and next prime (1621369).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1621363 is a prime.

It is not a weakly prime, because it can be changed into another prime (1621369) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 810681 + 810682.

It is an arithmetic number, because the mean of its divisors is an integer number (810682).

2^1621363 is an apocalyptic number.

1621363 is a deficient number, since it is larger than the sum of its proper divisors (1).

1621363 is an equidigital number, since it uses as much as digits as its factorization.

1621363 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 648, while the sum is 22.

The square root of 1621363 is about 1273.3275305278. The cubic root of 1621363 is about 117.4789580549.

The spelling of 1621363 in words is "one million, six hundred twenty-one thousand, three hundred sixty-three".