145564769 has 16 divisors (see below), whose sum is σ = 174597120. Its totient is φ = 118654800.

The previous prime is 145564763. The next prime is 145564789. The reversal of 145564769 is 967465541.

It is a cyclic number.

It is not a de Polignac number, because 145564769 - 2⁸ = 145564513 is a prime.

It is a super-2 number, since 2×145564769² = 42378203948046722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (145564763) 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 15 ways as a sum of consecutive naturals, for example, 26294 + ... + 31344.

It is an arithmetic number, because the mean of its divisors is an integer number (10912320).

Almost surely, 2^145564769 is an apocalyptic number.

It is an amenable number.

145564769 is a deficient number, since it is larger than the sum of its proper divisors (29032351).

145564769 is a wasteful number, since it uses less digits than its factorization.

145564769 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5260.

The product of its digits is 907200, while the sum is 47.

The square root of 145564769 is about 12065.0225445293. The cubic root of 145564769 is about 526.0399871772.

The spelling of 145564769 in words is "one hundred forty-five million, five hundred sixty-four thousand, seven hundred sixty-nine".