406561002 has 16 divisors (see below), whose sum is σ = 832954752. Its totient is φ = 132214880.

The previous prime is 406560983. The next prime is 406561003. The reversal of 406561002 is 200165604.

It is not an unprimeable number, because it can be changed into a prime (406561003) 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, 826098 + ... + 826589.

It is an arithmetic number, because the mean of its divisors is an integer number (52059672).

Almost surely, 2^406561002 is an apocalyptic number.

406561002 is an abundant number, since it is smaller than the sum of its proper divisors (426393750).

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

406561002 is a wasteful number, since it uses less digits than its factorization.

406561002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1652733.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 406561002 is about 20163.3579048729. The cubic root of 406561002 is about 740.8129621671.

The spelling of 406561002 in words is "four hundred six million, five hundred sixty-one thousand, two".