47723665 has 16 divisors (see below), whose sum is σ = 62674560. Its totient is φ = 34597120.

The previous prime is 47723651. The next prime is 47723671. The reversal of 47723665 is 56632774.

It is not a de Polignac number, because 47723665 - 2⁷ = 47723537 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18537 + ... + 20953.

It is an arithmetic number, because the mean of its divisors is an integer number (3917160).

Almost surely, 2^47723665 is an apocalyptic number.

It is an amenable number.

47723665 is a deficient number, since it is larger than the sum of its proper divisors (14950895).

47723665 is a wasteful number, since it uses less digits than its factorization.

47723665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2792.

The product of its digits is 211680, while the sum is 40.

The square root of 47723665 is about 6908.2316840129. The cubic root of 47723665 is about 362.7253675880.

It can be divided in two parts, 477 and 23665, that added together give a palindrome (24142).

The spelling of 47723665 in words is "forty-seven million, seven hundred twenty-three thousand, six hundred sixty-five".