406746643 has 8 divisors (see below), whose sum is σ = 411847200. Its totient is φ = 401658048.

The previous prime is 406746631. The next prime is 406746653. The reversal of 406746643 is 346647604.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 406746643 - 2⁵ = 406746611 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 406746596 and 406746605.

It is not an unprimeable number, because it can be changed into a prime (406746653) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 79305 + ... + 84277.

It is an arithmetic number, because the mean of its divisors is an integer number (51480900).

Almost surely, 2^406746643 is an apocalyptic number.

406746643 is a deficient number, since it is larger than the sum of its proper divisors (5100557).

406746643 is an equidigital number, since it uses as much as digits as its factorization.

406746643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5981.

The product of its (nonzero) digits is 290304, while the sum is 40.

The square root of 406746643 is about 20167.9608042063. The cubic root of 406746643 is about 740.9256999291.

The spelling of 406746643 in words is "four hundred six million, seven hundred forty-six thousand, six hundred forty-three".