406311660 has 96 divisors (see below), whose sum is σ = 1277277120. Its totient is φ = 107218944.

The previous prime is 406311623. The next prime is 406311671. The reversal of 406311660 is 66113604.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 48502 + ... + 56258.

It is an arithmetic number, because the mean of its divisors is an integer number (13304970).

Almost surely, 2^406311660 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 406311660, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (638638560).

406311660 is an abundant number, since it is smaller than the sum of its proper divisors (870965460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

406311660 is a wasteful number, since it uses less digits than its factorization.

406311660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7872 (or 7864 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 406311660 is about 20157.1739090578. The cubic root of 406311660 is about 740.6614854642.

The spelling of 406311660 in words is "four hundred six million, three hundred eleven thousand, six hundred sixty".