145564665 has 8 divisors (see below), whose sum is σ = 232903488. Its totient is φ = 77634480.

The previous prime is 145564651. The next prime is 145564691. The reversal of 145564665 is 566465541.

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

It is not a de Polignac number, because 145564665 - 2⁵ = 145564633 is a prime.

It is a nialpdrome in base 15.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4852141 + ... + 4852170.

It is an arithmetic number, because the mean of its divisors is an integer number (29112936).

Almost surely, 2^145564665 is an apocalyptic number.

145564665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

145564665 is a deficient number, since it is larger than the sum of its proper divisors (87338823).

145564665 is an equidigital number, since it uses as much as digits as its factorization.

145564665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9704319.

The product of its digits is 432000, while the sum is 42.

The square root of 145564665 is about 12065.0182345490. The cubic root of 145564665 is about 526.0398618993.

The spelling of 145564665 in words is "one hundred forty-five million, five hundred sixty-four thousand, six hundred sixty-five".