406735723 has 2 divisors, whose sum is σ = 406735724. Its totient is φ = 406735722.

The previous prime is 406735669. The next prime is 406735741. The reversal of 406735723 is 327537604.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406735723 is a prime.

It is not a weakly prime, because it can be changed into another prime (406735423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203367861 + 203367862.

It is an arithmetic number, because the mean of its divisors is an integer number (203367862).

Almost surely, 2^406735723 is an apocalyptic number.

406735723 is a deficient number, since it is larger than the sum of its proper divisors (1).

406735723 is an equidigital number, since it uses as much as digits as its factorization.

406735723 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 105840, while the sum is 37.

The square root of 406735723 is about 20167.6900759606. The cubic root of 406735723 is about 740.9190692814.

The spelling of 406735723 in words is "four hundred six million, seven hundred thirty-five thousand, seven hundred twenty-three".