145680865 has 16 divisors (see below), whose sum is σ = 191016000. Its totient is φ = 105779520.

The previous prime is 145680859. The next prime is 145680881. The reversal of 145680865 is 568086541.

It is a de Polignac number, because none of the positive numbers 2^k-145680865 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39886 + ... + 43384.

It is an arithmetic number, because the mean of its divisors is an integer number (11938500).

Almost surely, 2^145680865 is an apocalyptic number.

It is an amenable number.

145680865 is a deficient number, since it is larger than the sum of its proper divisors (45335135).

145680865 is a wasteful number, since it uses less digits than its factorization.

145680865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4272.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 145680865 is about 12069.8328488840. The cubic root of 145680865 is about 526.1797987312.

The spelling of 145680865 in words is "one hundred forty-five million, six hundred eighty thousand, eight hundred sixty-five".