147668215 has 4 divisors (see below), whose sum is σ = 177201864. Its totient is φ = 118134568.

The previous prime is 147668207. The next prime is 147668231. The reversal of 147668215 is 512866741.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 512866741 = 4783 ⋅107227.

It is a cyclic number.

It is not a de Polignac number, because 147668215 - 2³ = 147668207 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14766817 + ... + 14766826.

It is an arithmetic number, because the mean of its divisors is an integer number (44300466).

Almost surely, 2^147668215 is an apocalyptic number.

147668215 is a deficient number, since it is larger than the sum of its proper divisors (29533649).

147668215 is an equidigital number, since it uses as much as digits as its factorization.

147668215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29533648.

The product of its digits is 80640, while the sum is 40.

The square root of 147668215 is about 12151.8811300967. The cubic root of 147668215 is about 528.5616810787.

The spelling of 147668215 in words is "one hundred forty-seven million, six hundred sixty-eight thousand, two hundred fifteen".