406498660 has 24 divisors (see below), whose sum is σ = 881185536. Its totient is φ = 157354080.

The previous prime is 406498627. The next prime is 406498681. The reversal of 406498660 is 66894604.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 327202 + ... + 328441.

It is an arithmetic number, because the mean of its divisors is an integer number (36716064).

Almost surely, 2^406498660 is an apocalyptic number.

It is an amenable number.

406498660 is an abundant number, since it is smaller than the sum of its proper divisors (474686876).

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

406498660 is a wasteful number, since it uses less digits than its factorization.

406498660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655683 (or 655681 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 406498660 is about 20161.8119225431. The cubic root of 406498660 is about 740.7750948505.

The spelling of 406498660 in words is "four hundred six million, four hundred ninety-eight thousand, six hundred sixty".