147928661 has 8 divisors (see below), whose sum is σ = 155965920. Its totient is φ = 139916592.

The previous prime is 147928657. The next prime is 147928717. The reversal of 147928661 is 166829741.

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 147928661 - 2² = 147928657 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (147928631) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6446 + ... + 18368.

It is an arithmetic number, because the mean of its divisors is an integer number (19495740).

Almost surely, 2^147928661 is an apocalyptic number.

It is an amenable number.

147928661 is a deficient number, since it is larger than the sum of its proper divisors (8037259).

147928661 is a wasteful number, since it uses less digits than its factorization.

147928661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12595.

The product of its digits is 145152, while the sum is 44.

The square root of 147928661 is about 12162.5926923498. The cubic root of 147928661 is about 528.8722442385.

The spelling of 147928661 in words is "one hundred forty-seven million, nine hundred twenty-eight thousand, six hundred sixty-one".