1623091 has 2 divisors, whose sum is σ = 1623092. Its totient is φ = 1623090.

The previous prime is 1623077. The next prime is 1623107. The reversal of 1623091 is 1903261.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1623091 - 2⁵ = 1623059 is a prime.

It is not a weakly prime, because it can be changed into another prime (1623071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 811545 + 811546.

It is an arithmetic number, because the mean of its divisors is an integer number (811546).

2^1623091 is an apocalyptic number.

1623091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1623091 is an equidigital number, since it uses as much as digits as its factorization.

1623091 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 324, while the sum is 22.

The square root of 1623091 is about 1274.0058869566. The cubic root of 1623091 is about 117.5206784189.

The spelling of 1623091 in words is "one million, six hundred twenty-three thousand, ninety-one".