145772065 has 8 divisors (see below), whose sum is σ = 175429800. Its totient is φ = 116282112.

The previous prime is 145772063. The next prime is 145772071. The reversal of 145772065 is 560277541.

It can be written as a sum of positive squares in 4 ways, for example, as 78269409 + 67502656 = 8847^2 + 8216^2 .

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 145772065 - 2¹ = 145772063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (145772063) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40024 + ... + 43513.

It is an arithmetic number, because the mean of its divisors is an integer number (21928725).

Almost surely, 2^145772065 is an apocalyptic number.

It is an amenable number.

145772065 is a deficient number, since it is larger than the sum of its proper divisors (29657735).

145772065 is an equidigital number, since it uses as much as digits as its factorization.

145772065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 83891.

The product of its (nonzero) digits is 58800, while the sum is 37.

The square root of 145772065 is about 12073.6102719940. The cubic root of 145772065 is about 526.2895765603.

The spelling of 145772065 in words is "one hundred forty-five million, seven hundred seventy-two thousand, sixty-five".