147928657 has 2 divisors, whose sum is σ = 147928658. Its totient is φ = 147928656.

The previous prime is 147928633. The next prime is 147928717. The reversal of 147928657 is 756829741.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 146313216 + 1615441 = 12096^2 + 1271^2 .

It is an emirp because it is prime and its reverse (756829741) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 147928657 - 2¹⁵ = 147895889 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 147928657.

It is not a weakly prime, because it can be changed into another prime (147928757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 73964328 + 73964329.

It is an arithmetic number, because the mean of its divisors is an integer number (73964329).

Almost surely, 2^147928657 is an apocalyptic number.

It is an amenable number.

147928657 is a deficient number, since it is larger than the sum of its proper divisors (1).

147928657 is an equidigital number, since it uses as much as digits as its factorization.

147928657 is an evil number, because the sum of its binary digits is even.

The product of its digits is 846720, while the sum is 49.

The square root of 147928657 is about 12162.5925279111. The cubic root of 147928657 is about 528.8722394716.

The spelling of 147928657 in words is "one hundred forty-seven million, nine hundred twenty-eight thousand, six hundred fifty-seven".