920569145 has 8 divisors (see below), whose sum is σ = 1106245320. Its totient is φ = 735413760.

The previous prime is 920569121. The next prime is 920569163. The reversal of 920569145 is 541965029.

It can be written as a sum of positive squares in 4 ways, for example, as 39488656 + 881080489 = 6284^2 + 29683^2 .

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

It is not a de Polignac number, because 920569145 - 2⁶ = 920569081 is a prime.

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, 126296 + ... + 133385.

It is an arithmetic number, because the mean of its divisors is an integer number (138280665).

Almost surely, 2^920569145 is an apocalyptic number.

It is an amenable number.

920569145 is a deficient number, since it is larger than the sum of its proper divisors (185676175).

920569145 is a wasteful number, since it uses less digits than its factorization.

920569145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260395.

The product of its (nonzero) digits is 97200, while the sum is 41.

The square root of 920569145 is about 30340.8824031207. The cubic root of 920569145 is about 972.7893443201.

The spelling of 920569145 in words is "nine hundred twenty million, five hundred sixty-nine thousand, one hundred forty-five".