145965665 has 8 divisors (see below), whose sum is σ = 175893120. Its totient is φ = 116282992.

The previous prime is 145965661. The next prime is 145965667. The reversal of 145965665 is 566569541.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 145965665 - 2² = 145965661 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (145965661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59879 + ... + 62268.

It is an arithmetic number, because the mean of its divisors is an integer number (21986640).

Almost surely, 2^145965665 is an apocalyptic number.

It is an amenable number.

145965665 is a deficient number, since it is larger than the sum of its proper divisors (29927455).

145965665 is a wasteful number, since it uses less digits than its factorization.

145965665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 122391.

The product of its digits is 972000, while the sum is 47.

The square root of 145965665 is about 12081.6250976431. The cubic root of 145965665 is about 526.5224620328.

The spelling of 145965665 in words is "one hundred forty-five million, nine hundred sixty-five thousand, six hundred sixty-five".