47660777 has 4 divisors (see below), whose sum is σ = 47743956. Its totient is φ = 47577600.

The previous prime is 47660747. The next prime is 47660783. The reversal of 47660777 is 77706674.

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

It can be written as a sum of positive squares in 2 ways, for example, as 34621456 + 13039321 = 5884^2 + 3611^2 .

It is a cyclic number.

It is not a de Polignac number, because 47660777 - 2⁸ = 47660521 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47660747) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 40724 + ... + 41877.

It is an arithmetic number, because the mean of its divisors is an integer number (11935989).

Almost surely, 2^47660777 is an apocalyptic number.

It is an amenable number.

47660777 is a deficient number, since it is larger than the sum of its proper divisors (83179).

47660777 is an equidigital number, since it uses as much as digits as its factorization.

47660777 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83178.

The product of its (nonzero) digits is 345744, while the sum is 44.

The square root of 47660777 is about 6903.6785122136. The cubic root of 47660777 is about 362.5659700784.

The spelling of 47660777 in words is "forty-seven million, six hundred sixty thousand, seven hundred seventy-seven".