15630947 has 2 divisors, whose sum is σ = 15630948. Its totient is φ = 15630946.

The previous prime is 15630943. The next prime is 15630949. The reversal of 15630947 is 74903651.

15630947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 15630947 - 2² = 15630943 is a prime.

Together with 15630949, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15630943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7815473 + 7815474.

It is an arithmetic number, because the mean of its divisors is an integer number (7815474).

Almost surely, 2^15630947 is an apocalyptic number.

15630947 is a deficient number, since it is larger than the sum of its proper divisors (1).

15630947 is an equidigital number, since it uses as much as digits as its factorization.

15630947 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 15630947 is about 3953.5992462565. The cubic root of 15630947 is about 250.0317133102.

The spelling of 15630947 in words is "fifteen million, six hundred thirty thousand, nine hundred forty-seven".