163620447 has 8 divisors (see below), whose sum is σ = 218526000. Its totient is φ = 108897600.

The previous prime is 163620409. The next prime is 163620469. The reversal of 163620447 is 744026361.

It is a happy number.

163620447 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 163620447 - 2⁶ = 163620383 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (163620047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 43572 + ... + 47177.

It is an arithmetic number, because the mean of its divisors is an integer number (27315750).

Almost surely, 2^163620447 is an apocalyptic number.

163620447 is a deficient number, since it is larger than the sum of its proper divisors (54905553).

163620447 is an equidigital number, since it uses as much as digits as its factorization.

163620447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91353.

The product of its (nonzero) digits is 24192, while the sum is 33.

The square root of 163620447 is about 12791.4208358571. The cubic root of 163620447 is about 546.9477728767.

The spelling of 163620447 in words is "one hundred sixty-three million, six hundred twenty thousand, four hundred forty-seven".