406736663 has 2 divisors, whose sum is σ = 406736664. Its totient is φ = 406736662.

The previous prime is 406736651. The next prime is 406736689. The reversal of 406736663 is 366637604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406736663 - 2⁶ = 406736599 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 406736663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406736633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203368331 + 203368332.

It is an arithmetic number, because the mean of its divisors is an integer number (203368332).

Almost surely, 2^406736663 is an apocalyptic number.

406736663 is a deficient number, since it is larger than the sum of its proper divisors (1).

406736663 is an equidigital number, since it uses as much as digits as its factorization.

406736663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 326592, while the sum is 41.

The square root of 406736663 is about 20167.7133805496. The cubic root of 406736663 is about 740.9196400561.

The spelling of 406736663 in words is "four hundred six million, seven hundred thirty-six thousand, six hundred sixty-three".