147640321 has 8 divisors (see below), whose sum is σ = 152748288. Its totient is φ = 142554000.

The previous prime is 147640309. The next prime is 147640327. The reversal of 147640321 is 123046741.

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

It is a cyclic number.

It is not a de Polignac number, because 147640321 - 2⁹ = 147639809 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 147640321.

It is not an unprimeable number, because it can be changed into a prime (147640327) 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, 9126 + ... + 19456.

It is an arithmetic number, because the mean of its divisors is an integer number (19093536).

Almost surely, 2^147640321 is an apocalyptic number.

It is an amenable number.

147640321 is a deficient number, since it is larger than the sum of its proper divisors (5107967).

147640321 is a wasteful number, since it uses less digits than its factorization.

147640321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10823.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 147640321 is about 12150.7333523537. The cubic root of 147640321 is about 528.5283978431.

The spelling of 147640321 in words is "one hundred forty-seven million, six hundred forty thousand, three hundred twenty-one".