47407666 has 4 divisors (see below), whose sum is σ = 71111502. Its totient is φ = 23703832.

The previous prime is 47407651. The next prime is 47407673. The reversal of 47407666 is 66670474.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 47320641 + 87025 = 6879^2 + 295^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11851915 + ... + 11851918.

Almost surely, 2^47407666 is an apocalyptic number.

47407666 is a deficient number, since it is larger than the sum of its proper divisors (23703836).

47407666 is a wasteful number, since it uses less digits than its factorization.

47407666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23703835.

The product of its (nonzero) digits is 169344, while the sum is 40.

The square root of 47407666 is about 6885.3225051554. The cubic root of 47407666 is about 361.9230069359.

The spelling of 47407666 in words is "forty-seven million, four hundred seven thousand, six hundred sixty-six".