461661220 has 24 divisors (see below), whose sum is σ = 969897600. Its totient is φ = 184586592.

The previous prime is 461661191. The next prime is 461661229. The reversal of 461661220 is 22166164.

It is not an unprimeable number, because it can be changed into a prime (461661229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78751 + ... + 84409.

It is an arithmetic number, because the mean of its divisors is an integer number (40412400).

Almost surely, 2^461661220 is an apocalyptic number.

It is an amenable number.

461661220 is an abundant number, since it is smaller than the sum of its proper divisors (508236380).

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

461661220 is a wasteful number, since it uses less digits than its factorization.

461661220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9747 (or 9745 counting only the distinct ones).

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 461661220 is about 21486.3030789385. The cubic root of 461661220 is about 772.8723996350.

The spelling of 461661220 in words is "four hundred sixty-one million, six hundred sixty-one thousand, two hundred twenty".