481178661 has 8 divisors (see below), whose sum is σ = 646255104. Its totient is φ = 318444000.

The previous prime is 481178627. The next prime is 481178717. The reversal of 481178661 is 166871184.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 481178661 - 2¹⁹ = 480654373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (481177661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 584965 + ... + 585786.

It is an arithmetic number, because the mean of its divisors is an integer number (80781888).

Almost surely, 2^481178661 is an apocalyptic number.

It is an amenable number.

481178661 is a deficient number, since it is larger than the sum of its proper divisors (165076443).

481178661 is a wasteful number, since it uses less digits than its factorization.

481178661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1170891.

The product of its digits is 64512, while the sum is 42.

The square root of 481178661 is about 21935.7849415060. The cubic root of 481178661 is about 783.6138796337.

The spelling of 481178661 in words is "four hundred eighty-one million, one hundred seventy-eight thousand, six hundred sixty-one".