145686563 has 4 divisors (see below), whose sum is σ = 158930808. Its totient is φ = 132442320.

The previous prime is 145686553. The next prime is 145686589. The reversal of 145686563 is 365686541.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-145686563 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145686553) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6622106 + ... + 6622127.

It is an arithmetic number, because the mean of its divisors is an integer number (39732702).

Almost surely, 2^145686563 is an apocalyptic number.

145686563 is a deficient number, since it is larger than the sum of its proper divisors (13244245).

145686563 is a wasteful number, since it uses less digits than its factorization.

145686563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13244244.

The product of its digits is 518400, while the sum is 44.

The square root of 145686563 is about 12070.0688896129. The cubic root of 145686563 is about 526.1866587797.

The spelling of 145686563 in words is "one hundred forty-five million, six hundred eighty-six thousand, five hundred sixty-three".