461656221 has 8 divisors (see below), whose sum is σ = 662891040. Its totient is φ = 284096112.

The previous prime is 461656219. The next prime is 461656229. The reversal of 461656221 is 122656164.

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

It is not a de Polignac number, because 461656221 - 2¹ = 461656219 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461656229) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5918631 + ... + 5918708.

It is an arithmetic number, because the mean of its divisors is an integer number (82861380).

Almost surely, 2^461656221 is an apocalyptic number.

It is an amenable number.

461656221 is a deficient number, since it is larger than the sum of its proper divisors (201234819).

461656221 is a wasteful number, since it uses less digits than its factorization.

461656221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11837355.

The product of its digits is 17280, while the sum is 33.

The square root of 461656221 is about 21486.1867486997. The cubic root of 461656221 is about 772.8696099970.

The spelling of 461656221 in words is "four hundred sixty-one million, six hundred fifty-six thousand, two hundred twenty-one".