481480661 has 2 divisors, whose sum is σ = 481480662. Its totient is φ = 481480660.

The previous prime is 481480619. The next prime is 481480663. The reversal of 481480661 is 166084184.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 350812900 + 130667761 = 18730^2 + 11431^2 .

It is a cyclic number.

It is not a de Polignac number, because 481480661 - 2²² = 477286357 is a prime.

Together with 481480663, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (481480663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 240740330 + 240740331.

It is an arithmetic number, because the mean of its divisors is an integer number (240740331).

Almost surely, 2^481480661 is an apocalyptic number.

It is an amenable number.

481480661 is a deficient number, since it is larger than the sum of its proper divisors (1).

481480661 is an equidigital number, since it uses as much as digits as its factorization.

481480661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 481480661 is about 21942.6675907921. The cubic root of 481480661 is about 783.7777840339. Note that the first 4 decimals are identical.

The spelling of 481480661 in words is "four hundred eighty-one million, four hundred eighty thousand, six hundred sixty-one".