481277661 has 4 divisors (see below), whose sum is σ = 641703552. Its totient is φ = 320851772.

The previous prime is 481277659. The next prime is 481277663. The reversal of 481277661 is 166772184.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (481277659) and next prime (481277663).

It is a cyclic number.

It is not a de Polignac number, because 481277661 - 2¹ = 481277659 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481277663) 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, 80212941 + ... + 80212946.

It is an arithmetic number, because the mean of its divisors is an integer number (160425888).

Almost surely, 2^481277661 is an apocalyptic number.

It is an amenable number.

481277661 is a deficient number, since it is larger than the sum of its proper divisors (160425891).

481277661 is a wasteful number, since it uses less digits than its factorization.

481277661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160425890.

The product of its digits is 112896, while the sum is 42.

The square root of 481277661 is about 21938.0414121225. The cubic root of 481277661 is about 783.6676174381.

The spelling of 481277661 in words is "four hundred eighty-one million, two hundred seventy-seven thousand, six hundred sixty-one".