145568817 has 12 divisors (see below), whose sum is σ = 219408384. Its totient is φ = 92826360.

The previous prime is 145568783. The next prime is 145568827. The reversal of 145568817 is 718865541.

145568817 is a `hidden beast` number, since 1 + 4 + 5 + 568 + 81 + 7 = 666.

It is not a de Polignac number, because 145568817 - 2¹² = 145564721 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145568827) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 351409 + ... + 351822.

It is an arithmetic number, because the mean of its divisors is an integer number (18284032).

Almost surely, 2^145568817 is an apocalyptic number.

It is an amenable number.

145568817 is a deficient number, since it is larger than the sum of its proper divisors (73839567).

145568817 is a wasteful number, since it uses less digits than its factorization.

145568817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 703260 (or 703257 counting only the distinct ones).

The product of its digits is 268800, while the sum is 45.

The square root of 145568817 is about 12065.1903010272. The cubic root of 145568817 is about 526.0448633345.

The spelling of 145568817 in words is "one hundred forty-five million, five hundred sixty-eight thousand, eight hundred seventeen".