406020623 has 2 divisors, whose sum is σ = 406020624. Its totient is φ = 406020622.

The previous prime is 406020607. The next prime is 406020631. The reversal of 406020623 is 326020604.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 406020623 - 2⁴ = 406020607 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406020023) 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, 203010311 + 203010312.

It is an arithmetic number, because the mean of its divisors is an integer number (203010312).

Almost surely, 2^406020623 is an apocalyptic number.

406020623 is a deficient number, since it is larger than the sum of its proper divisors (1).

406020623 is an equidigital number, since it uses as much as digits as its factorization.

406020623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 23.

The square root of 406020623 is about 20149.9534242638. The cubic root of 406020623 is about 740.4846004059.

The spelling of 406020623 in words is "four hundred six million, twenty thousand, six hundred twenty-three".