461761640 has 32 divisors (see below), whose sum is σ = 1043642880. Its totient is φ = 183872832.

The previous prime is 461761631. The next prime is 461761679. The reversal of 461761640 is 46167164.

It is a self number, because there is not a number n which added to its sum of digits gives 461761640.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16964 + ... + 34803.

It is an arithmetic number, because the mean of its divisors is an integer number (32613840).

Almost surely, 2^461761640 is an apocalyptic number.

461761640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

461761640 is an abundant number, since it is smaller than the sum of its proper divisors (581881240).

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

461761640 is a wasteful number, since it uses less digits than its factorization.

461761640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52001 (or 51997 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 461761640 is about 21488.6397894329. The cubic root of 461761640 is about 772.9284336677.

The spelling of 461761640 in words is "four hundred sixty-one million, seven hundred sixty-one thousand, six hundred forty".