461640506 has 16 divisors (see below), whose sum is σ = 702535680. Its totient is φ = 227484720.

The previous prime is 461640493. The next prime is 461640563. The reversal of 461640506 is 605046164.

It is a super-3 number, since 3×461640506³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Curzon number.

It is an unprimeable number.

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, 36095 + ... + 47181.

It is an arithmetic number, because the mean of its divisors is an integer number (43908480).

Almost surely, 2^461640506 is an apocalyptic number.

461640506 is a deficient number, since it is larger than the sum of its proper divisors (240895174).

461640506 is a wasteful number, since it uses less digits than its factorization.

461640506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11389.

The product of its (nonzero) digits is 17280, while the sum is 32.

The square root of 461640506 is about 21485.8210455174. The cubic root of 461640506 is about 772.8608402796.

The spelling of 461640506 in words is "four hundred sixty-one million, six hundred forty thousand, five hundred six".