406746631 has 2 divisors, whose sum is σ = 406746632. Its totient is φ = 406746630.

The previous prime is 406746619. The next prime is 406746653. The reversal of 406746631 is 136647604.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 406746631 - 2²⁵ = 373192199 is a prime.

It is a super-2 number, since 2×406746631² = 330885643659700322, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (406746611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 203373315 + 203373316.

It is an arithmetic number, because the mean of its divisors is an integer number (203373316).

Almost surely, 2^406746631 is an apocalyptic number.

406746631 is a deficient number, since it is larger than the sum of its proper divisors (1).

406746631 is an equidigital number, since it uses as much as digits as its factorization.

406746631 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 37.

The square root of 406746631 is about 20167.9605067047. The cubic root of 406746631 is about 740.9256926428.

The spelling of 406746631 in words is "four hundred six million, seven hundred forty-six thousand, six hundred thirty-one".