145668875 has 24 divisors (see below), whose sum is σ = 199844736. Its totient is φ = 105930000.

The previous prime is 145668871. The next prime is 145668893. The reversal of 145668875 is 578866541.

It is not a de Polignac number, because 145668875 - 2² = 145668871 is a prime.

It is a super-2 number, since 2×145668875² = 42438842287531250, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145668871) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10310 + ... + 19940.

It is an arithmetic number, because the mean of its divisors is an integer number (8326864).

Almost surely, 2^145668875 is an apocalyptic number.

145668875 is a deficient number, since it is larger than the sum of its proper divisors (54175861).

145668875 is an equidigital number, since it uses as much as digits as its factorization.

145668875 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9668 (or 9647 counting only the distinct ones).

The product of its digits is 1612800, while the sum is 50.

The square root of 145668875 is about 12069.3361457870. The cubic root of 145668875 is about 526.1653629097.

The spelling of 145668875 in words is "one hundred forty-five million, six hundred sixty-eight thousand, eight hundred seventy-five".