406236545 has 16 divisors (see below), whose sum is σ = 572709312. Its totient is φ = 272717760.

The previous prime is 406236533. The next prime is 406236577. The reversal of 406236545 is 545632604.

It is a happy number.

It is not a de Polignac number, because 406236545 - 2¹⁴ = 406220161 is a prime.

It is a Duffinian 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, 283367 + ... + 284796.

It is an arithmetic number, because the mean of its divisors is an integer number (35794332).

Almost surely, 2^406236545 is an apocalyptic number.

It is an amenable number.

406236545 is a deficient number, since it is larger than the sum of its proper divisors (166472767).

406236545 is a wasteful number, since it uses less digits than its factorization.

406236545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 568192.

The product of its (nonzero) digits is 86400, while the sum is 35.

The square root of 406236545 is about 20155.3105905119. The cubic root of 406236545 is about 740.6158405224.

The spelling of 406236545 in words is "four hundred six million, two hundred thirty-six thousand, five hundred forty-five".