477261666 has 48 divisors (see below), whose sum is σ = 1233744480. Its totient is φ = 136359720.

The previous prime is 477261649. The next prime is 477261667. The reversal of 477261666 is 666162774.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (477261667) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87540 + ... + 92831.

It is an arithmetic number, because the mean of its divisors is an integer number (25703010).

Almost surely, 2^477261666 is an apocalyptic number.

477261666 is an abundant number, since it is smaller than the sum of its proper divisors (756482814).

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

477261666 is a wasteful number, since it uses less digits than its factorization.

477261666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180396 (or 180383 counting only the distinct ones).

The product of its digits is 508032, while the sum is 45.

The square root of 477261666 is about 21846.3192780844. The cubic root of 477261666 is about 781.4817690937.

The spelling of 477261666 in words is "four hundred seventy-seven million, two hundred sixty-one thousand, six hundred sixty-six".