147897 has 6 divisors (see below), whose sum is σ = 213642. Its totient is φ = 98592.

The previous prime is 147881. The next prime is 147919. The reversal of 147897 is 798741.

It can be written as a sum of positive squares in only one way, i.e., 147456 + 441 = 384^2 + 21^2 .

It is not a de Polignac number, because 147897 - 2⁴ = 147881 is a prime.

147897 is a lucky number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 147897.

It is not an unprimeable number, because it can be changed into a prime (147827) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8208 + ... + 8225.

It is an arithmetic number, because the mean of its divisors is an integer number (35607).

147897 is a Friedman number, since it can be written as 9*(7*7+4^(8-1)), using all its digits and the basic arithmetic operations.

2¹⁴⁷⁸⁹⁷ is an apocalyptic number.

It is an amenable number.

147897 is a deficient number, since it is larger than the sum of its proper divisors (65745).

147897 is a wasteful number, since it uses less digits than its factorization.

147897 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16439 (or 16436 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 147897 is about 384.5737900586. The cubic root of 147897 is about 52.8834510242.

The spelling of 147897 in words is "one hundred forty-seven thousand, eight hundred ninety-seven".