461687217 has 4 divisors (see below), whose sum is σ = 615582960. Its totient is φ = 307791476.

The previous prime is 461687209. The next prime is 461687263. The reversal of 461687217 is 712786164.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 461687217 - 2³ = 461687209 is a prime.

It is not an unprimeable number, because it can be changed into a prime (461680217) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76947867 + ... + 76947872.

It is an arithmetic number, because the mean of its divisors is an integer number (153895740).

Almost surely, 2^461687217 is an apocalyptic number.

It is an amenable number.

461687217 is a deficient number, since it is larger than the sum of its proper divisors (153895743).

461687217 is a wasteful number, since it uses less digits than its factorization.

461687217 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153895742.

The product of its digits is 112896, while the sum is 42.

The square root of 461687217 is about 21486.9080372212. The cubic root of 461687217 is about 772.8869066557.

The spelling of 461687217 in words is "four hundred sixty-one million, six hundred eighty-seven thousand, two hundred seventeen".