406624645 has 16 divisors (see below), whose sum is σ = 560746368. Its totient is φ = 277283520.

The previous prime is 406624633. The next prime is 406624651. The reversal of 406624645 is 546426604.

It is not a de Polignac number, because 406624645 - 2⁹ = 406624133 is a prime.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 25759 + ... + 38428.

It is an arithmetic number, because the mean of its divisors is an integer number (35046648).

Almost surely, 2^406624645 is an apocalyptic number.

It is an amenable number.

406624645 is a deficient number, since it is larger than the sum of its proper divisors (154121723).

406624645 is a wasteful number, since it uses less digits than its factorization.

406624645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64380.

The product of its (nonzero) digits is 138240, while the sum is 37.

The square root of 406624645 is about 20164.9360276694. The cubic root of 406624645 is about 740.8516157346.

The spelling of 406624645 in words is "four hundred six million, six hundred twenty-four thousand, six hundred forty-five".