47006681 has 4 divisors (see below), whose sum is σ = 47033652. Its totient is φ = 46979712.

The previous prime is 47006647. The next prime is 47006719. The reversal of 47006681 is 18660074.

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 6046681 + 40960000 = 2459^2 + 6400^2 .

It is a cyclic number.

It is not a de Polignac number, because 47006681 - 2¹⁴ = 46990297 is a prime.

It is a super-2 number, since 2×47006681² = 4419256117271522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47006381) 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, 10676 + ... + 14421.

It is an arithmetic number, because the mean of its divisors is an integer number (11758413).

Almost surely, 2^47006681 is an apocalyptic number.

It is an amenable number.

47006681 is a deficient number, since it is larger than the sum of its proper divisors (26971).

47006681 is a wasteful number, since it uses less digits than its factorization.

47006681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26970.

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 47006681 is about 6856.1418450904. The cubic root of 47006681 is about 360.8997068966.

The spelling of 47006681 in words is "forty-seven million, six thousand, six hundred eighty-one".