147223665 has 24 divisors (see below), whose sum is σ = 260006760. Its totient is φ = 77036544.

The previous prime is 147223651. The next prime is 147223673. The reversal of 147223665 is 566322741.

It can be written as a sum of positive squares in 4 ways, for example, as 71115489 + 76108176 = 8433^2 + 8724^2 .

It is not a de Polignac number, because 147223665 - 2⁴ = 147223649 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 28480 + ... + 33249.

It is an arithmetic number, because the mean of its divisors is an integer number (10833615).

Almost surely, 2^147223665 is an apocalyptic number.

147223665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

147223665 is a deficient number, since it is larger than the sum of its proper divisors (112783095).

147223665 is a wasteful number, since it uses less digits than its factorization.

147223665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 61793 (or 61790 counting only the distinct ones).

The product of its digits is 60480, while the sum is 36.

The square root of 147223665 is about 12133.5759362193. The cubic root of 147223665 is about 528.0307424421.

The spelling of 147223665 in words is "one hundred forty-seven million, two hundred twenty-three thousand, six hundred sixty-five".