928069561 has 4 divisors (see below), whose sum is σ = 932780772. Its totient is φ = 923358352.

The previous prime is 928069489. The next prime is 928069603. The reversal of 928069561 is 165960829.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 592630336 + 335439225 = 24344^2 + 18315^2 .

It is a cyclic number.

It is not a de Polignac number, because 928069561 - 2¹³ = 928061369 is a prime.

It is a super-2 number, since 2×928069561² = 1722626220109465442, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (928069361) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2355310 + ... + 2355703.

It is an arithmetic number, because the mean of its divisors is an integer number (233195193).

Almost surely, 2^928069561 is an apocalyptic number.

It is an amenable number.

928069561 is a deficient number, since it is larger than the sum of its proper divisors (4711211).

928069561 is a wasteful number, since it uses less digits than its factorization.

928069561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4711210.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 928069561 is about 30464.2341279081. The cubic root of 928069561 is about 975.4241629365.

The spelling of 928069561 in words is "nine hundred twenty-eight million, sixty-nine thousand, five hundred sixty-one".