477768661 has 8 divisors (see below), whose sum is σ = 503132000. Its totient is φ = 452427120.

The previous prime is 477768647. The next prime is 477768671. The reversal of 477768661 is 166867774.

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

It is a cyclic number.

It is not a de Polignac number, because 477768661 - 2¹⁵ = 477735893 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 477768599 and 477768608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (477768611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59515 + ... + 67063.

It is an arithmetic number, because the mean of its divisors is an integer number (62891500).

Almost surely, 2^477768661 is an apocalyptic number.

It is an amenable number.

477768661 is a deficient number, since it is larger than the sum of its proper divisors (25363339).

477768661 is a wasteful number, since it uses less digits than its factorization.

477768661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10899.

The product of its digits is 2370816, while the sum is 52.

The square root of 477768661 is about 21857.9198690086. The cubic root of 477768661 is about 781.7583938214.

The spelling of 477768661 in words is "four hundred seventy-seven million, seven hundred sixty-eight thousand, six hundred sixty-one".