477665916 has 192 divisors, whose sum is σ = 1430016000. Its totient is φ = 123282432.

The previous prime is 477665891. The next prime is 477665917. The reversal of 477665916 is 619566774.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (477665917) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 4227076 + ... + 4227188.

It is an arithmetic number, because the mean of its divisors is an integer number (7448000).

Almost surely, 2^477665916 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 477665916, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (715008000).

477665916 is an abundant number, since it is smaller than the sum of its proper divisors (952350084).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

477665916 is a wasteful number, since it uses less digits than its factorization.

477665916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 233 (or 217 counting only the distinct ones).

The product of its digits is 1905120, while the sum is 51.

The square root of 477665916 is about 21855.5694503712. The cubic root of 477665916 is about 781.7023502930.

The spelling of 477665916 in words is "four hundred seventy-seven million, six hundred sixty-five thousand, nine hundred sixteen".