47706649 has 3 divisors (see below), whose sum is σ = 47713557. Its totient is φ = 47699742.

The previous prime is 47706629. The next prime is 47706683. The reversal of 47706649 is 94660774.

The square root of 47706649 is 6907.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 47706649 - 2⁹ = 47706137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (47706629) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3454 + ... + 10360.

It is an arithmetic number, because the mean of its divisors is an integer number (15904519).

Almost surely, 2^47706649 is an apocalyptic number.

47706649 is the 6907-th square number.

47706649 is the 3454-th centered octagonal number.

It is an amenable number.

47706649 is a deficient number, since it is larger than the sum of its proper divisors (6908).

47706649 is an frugal number, since it uses more digits than its factorization.

47706649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13814 (or 6907 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 43.

The cubic root of 47706649 is about 362.6822522310.

Multiplying 47706649 by its product of nonzero digits (254016), we get a square (12118252152384 = 3481128²).

The spelling of 47706649 in words is "forty-seven million, seven hundred six thousand, six hundred forty-nine".