477385661 has 8 divisors (see below), whose sum is σ = 483138720. Its totient is φ = 471667248.

The previous prime is 477385639. The next prime is 477385663. The reversal of 477385661 is 166583774.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-477385661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (477385663) 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, 19610 + ... + 36596.

It is an arithmetic number, because the mean of its divisors is an integer number (60392340).

Almost surely, 2^477385661 is an apocalyptic number.

It is an amenable number.

477385661 is a deficient number, since it is larger than the sum of its proper divisors (5753059).

477385661 is a wasteful number, since it uses less digits than its factorization.

477385661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17323.

The product of its digits is 846720, while the sum is 47.

The square root of 477385661 is about 21849.1569860258. The cubic root of 477385661 is about 781.5494408751.

The spelling of 477385661 in words is "four hundred seventy-seven million, three hundred eighty-five thousand, six hundred sixty-one".