461778609 has 16 divisors (see below), whose sum is σ = 624191040. Its totient is φ = 303635520.

The previous prime is 461778593. The next prime is 461778617. The reversal of 461778609 is 906877164.

It is not a de Polignac number, because 461778609 - 2⁴ = 461778593 is a prime.

It is not an unprimeable number, because it can be changed into a prime (461778649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71119 + ... + 77339.

It is an arithmetic number, because the mean of its divisors is an integer number (39011940).

Almost surely, 2^461778609 is an apocalyptic number.

It is an amenable number.

461778609 is a deficient number, since it is larger than the sum of its proper divisors (162412431).

461778609 is a wasteful number, since it uses less digits than its factorization.

461778609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 461778609 is about 21489.0346223370. The cubic root of 461778609 is about 772.9379015120.

The spelling of 461778609 in words is "four hundred sixty-one million, seven hundred seventy-eight thousand, six hundred nine".