406437605 has 24 divisors (see below), whose sum is σ = 568737792. Its totient is φ = 278020512.

The previous prime is 406437599. The next prime is 406437613. The reversal of 406437605 is 506734604.

It is a de Polignac number, because none of the positive numbers 2^k-406437605 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111644 + ... + 115226.

It is an arithmetic number, because the mean of its divisors is an integer number (23697408).

Almost surely, 2^406437605 is an apocalyptic number.

It is an amenable number.

406437605 is a deficient number, since it is larger than the sum of its proper divisors (162300187).

406437605 is a wasteful number, since it uses less digits than its factorization.

406437605 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4065 (or 4058 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 35.

The square root of 406437605 is about 20160.2977408569. The cubic root of 406437605 is about 740.7380055212.

The spelling of 406437605 in words is "four hundred six million, four hundred thirty-seven thousand, six hundred five".