159220647 has 12 divisors (see below), whose sum is σ = 238503720. Its totient is φ = 106146936.

The previous prime is 159220613. The next prime is 159220661. The reversal of 159220647 is 746022951.

159220647 is a `hidden beast` number, since 1 + 5 + 9 + 2 + 2 + 0 + 647 = 666.

It is not a de Polignac number, because 159220647 - 2¹⁰ = 159219623 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (159220667) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 327372 + ... + 327857.

It is an arithmetic number, because the mean of its divisors is an integer number (19875310).

Almost surely, 2^159220647 is an apocalyptic number.

159220647 is a deficient number, since it is larger than the sum of its proper divisors (79283073).

159220647 is an frugal number, since it uses more digits than its factorization.

159220647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 655244 (or 655232 counting only the distinct ones).

The product of its (nonzero) digits is 30240, while the sum is 36.

The square root of 159220647 is about 12618.2664023233. The cubic root of 159220647 is about 542.0006342953. Note that the first 3 decimals are identical.

The spelling of 159220647 in words is "one hundred fifty-nine million, two hundred twenty thousand, six hundred forty-seven".