47638705 has 8 divisors (see below), whose sum is σ = 57949992. Its totient is φ = 37588608.

The previous prime is 47638699. The next prime is 47638729. The reversal of 47638705 is 50783674.

It can be written as a sum of positive squares in 4 ways, for example, as 20223009 + 27415696 = 4497^2 + 5236^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 47638705 - 2³ = 47638697 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 64894 + ... + 65623.

It is an arithmetic number, because the mean of its divisors is an integer number (7243749).

Almost surely, 2^47638705 is an apocalyptic number.

It is an amenable number.

47638705 is a deficient number, since it is larger than the sum of its proper divisors (10311287).

47638705 is a wasteful number, since it uses less digits than its factorization.

47638705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130595.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 47638705 is about 6902.0797590292. The cubic root of 47638705 is about 362.5099925902.

The spelling of 47638705 in words is "forty-seven million, six hundred thirty-eight thousand, seven hundred five".