47086661 has 4 divisors (see below), whose sum is σ = 47884800. Its totient is φ = 46288524.

The previous prime is 47086619. The next prime is 47086709. The reversal of 47086661 is 16668074.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 47086661 - 2¹⁸ = 46824517 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 (47086601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 398981 + ... + 399098.

It is an arithmetic number, because the mean of its divisors is an integer number (11971200).

Almost surely, 2^47086661 is an apocalyptic number.

It is an amenable number.

47086661 is a deficient number, since it is larger than the sum of its proper divisors (798139).

47086661 is an equidigital number, since it uses as much as digits as its factorization.

47086661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 798138.

The product of its (nonzero) digits is 48384, while the sum is 38.

The square root of 47086661 is about 6861.9720926276. The cubic root of 47086661 is about 361.1042764220.

The spelling of 47086661 in words is "forty-seven million, eighty-six thousand, six hundred sixty-one".