47787106 has 4 divisors (see below), whose sum is σ = 71680662. Its totient is φ = 23893552.

The previous prime is 47787101. The next prime is 47787143. The reversal of 47787106 is 60178774.

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., 29648025 + 18139081 = 5445^2 + 4259^2 .

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (47787101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11946775 + ... + 11946778.

Almost surely, 2^47787106 is an apocalyptic number.

47787106 is a deficient number, since it is larger than the sum of its proper divisors (23893556).

47787106 is a wasteful number, since it uses less digits than its factorization.

47787106 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23893555.

The product of its (nonzero) digits is 65856, while the sum is 40.

The square root of 47787106 is about 6912.8218550748. The cubic root of 47787106 is about 362.8860249250.

The spelling of 47787106 in words is "forty-seven million, seven hundred eighty-seven thousand, one hundred six".