6666477 has 16 divisors (see below), whose sum is σ = 9229248. Its totient is φ = 4277120.

The previous prime is 6666467. The next prime is 6666479. The reversal of 6666477 is 7746666.

It is not a de Polignac number, because 6666477 - 2¹¹ = 6664429 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666479) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9883 + ... + 10535.

It is an arithmetic number, because the mean of its divisors is an integer number (576828).

Almost surely, 2^6666477 is an apocalyptic number.

It is an amenable number.

6666477 is a deficient number, since it is larger than the sum of its proper divisors (2562771).

6666477 is a wasteful number, since it uses less digits than its factorization.

6666477 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 780.

The product of its digits is 254016, while the sum is 42.

The square root of 6666477 is about 2581.9521684183. The cubic root of 6666477 is about 188.2054209276.

The spelling of 6666477 in words is "six million, six hundred sixty-six thousand, four hundred seventy-seven".