406506885 has 8 divisors (see below), whose sum is σ = 650411040. Its totient is φ = 216803664.

The previous prime is 406506883. The next prime is 406506887. The reversal of 406506885 is 588605604.

It is an interprime number because it is at equal distance from previous prime (406506883) and next prime (406506887).

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

It is not a de Polignac number, because 406506885 - 2¹ = 406506883 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (406506883) 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, 13550215 + ... + 13550244.

It is an arithmetic number, because the mean of its divisors is an integer number (81301380).

Almost surely, 2^406506885 is an apocalyptic number.

It is an amenable number.

406506885 is a deficient number, since it is larger than the sum of its proper divisors (243904155).

406506885 is a wasteful number, since it uses less digits than its factorization.

406506885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27100467.

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 406506885 is about 20162.0158962342. The cubic root of 406506885 is about 740.7800910409.

The spelling of 406506885 in words is "four hundred six million, five hundred six thousand, eight hundred eighty-five".