47640623 has 2 divisors, whose sum is σ = 47640624. Its totient is φ = 47640622.

The previous prime is 47640611. The next prime is 47640629. The reversal of 47640623 is 32604674.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 47640623 - 2⁶ = 47640559 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 47640623.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (47640629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 23820311 + 23820312.

It is an arithmetic number, because the mean of its divisors is an integer number (23820312).

Almost surely, 2^47640623 is an apocalyptic number.

47640623 is a deficient number, since it is larger than the sum of its proper divisors (1).

47640623 is an equidigital number, since it uses as much as digits as its factorization.

47640623 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 32.

The square root of 47640623 is about 6902.2187012583. The cubic root of 47640623 is about 362.5148575757.

The spelling of 47640623 in words is "forty-seven million, six hundred forty thousand, six hundred twenty-three".