923074561 has 4 divisors (see below), whose sum is σ = 935719492. Its totient is φ = 910429632.

The previous prime is 923074547. The next prime is 923074577. The reversal of 923074561 is 165470329.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 165470329 = 577 ⋅286777.

It can be written as a sum of positive squares in 2 ways, for example, as 694006336 + 229068225 = 26344^2 + 15135^2 .

It is a cyclic number.

It is not a de Polignac number, because 923074561 - 2¹⁹ = 922550273 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 923074561.

It is not an unprimeable number, because it can be changed into a prime (923071561) 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, 6322356 + ... + 6322501.

It is an arithmetic number, because the mean of its divisors is an integer number (233929873).

It is a Proth number, since it is equal to 14085 ⋅ 2¹⁶ + 1 and 14085 < 2¹⁶.

Almost surely, 2^923074561 is an apocalyptic number.

It is an amenable number.

923074561 is a deficient number, since it is larger than the sum of its proper divisors (12644931).

923074561 is a wasteful number, since it uses less digits than its factorization.

923074561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12644930.

The product of its (nonzero) digits is 45360, while the sum is 37.

The square root of 923074561 is about 30382.1421397504. The cubic root of 923074561 is about 973.6710576517.

The spelling of 923074561 in words is "nine hundred twenty-three million, seventy-four thousand, five hundred sixty-one".