461778601 has 4 divisors (see below), whose sum is σ = 469348804. Its totient is φ = 454208400.

The previous prime is 461778593. The next prime is 461778617. The reversal of 461778601 is 106877164.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 197683600 + 264095001 = 14060^2 + 16251^2 .

It is a cyclic number.

It is not a de Polignac number, because 461778601 - 2³ = 461778593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (461778101) 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, 3785010 + ... + 3785131.

It is an arithmetic number, because the mean of its divisors is an integer number (117337201).

Almost surely, 2^461778601 is an apocalyptic number.

It is an amenable number.

461778601 is a deficient number, since it is larger than the sum of its proper divisors (7570203).

461778601 is an equidigital number, since it uses as much as digits as its factorization.

461778601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7570202.

The product of its (nonzero) digits is 56448, while the sum is 40.

The square root of 461778601 is about 21489.0344361956. The cubic root of 461778601 is about 772.9378970484.

The spelling of 461778601 in words is "four hundred sixty-one million, seven hundred seventy-eight thousand, six hundred one".