461636646 has 8 divisors (see below), whose sum is σ = 923273304. Its totient is φ = 153878880.

The previous prime is 461636599. The next prime is 461636647. The reversal of 461636646 is 646636164.

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

461636646 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 461636598 and 461636607.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (461636647) 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, 38469715 + ... + 38469726.

It is an arithmetic number, because the mean of its divisors is an integer number (115409163).

Almost surely, 2^461636646 is an apocalyptic number.

461636646 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

461636646 is a wasteful number, since it uses less digits than its factorization.

461636646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 76939446.

The product of its digits is 373248, while the sum is 42.

The square root of 461636646 is about 21485.7312186483. The cubic root of 461636646 is about 772.8586861856.

The spelling of 461636646 in words is "four hundred sixty-one million, six hundred thirty-six thousand, six hundred forty-six".