945804665 has 8 divisors (see below), whose sum is σ = 1222270728. Its totient is φ = 698440320.

The previous prime is 945804661. The next prime is 945804677. The reversal of 945804665 is 566408549.

It can be written as a sum of positive squares in 4 ways, for example, as 17749369 + 928055296 = 4213^2 + 30464^2 .

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

It is not a de Polignac number, because 945804665 - 2² = 945804661 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (945804661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7275356 + ... + 7275485.

It is an arithmetic number, because the mean of its divisors is an integer number (152783841).

Almost surely, 2^945804665 is an apocalyptic number.

It is an amenable number.

945804665 is a deficient number, since it is larger than the sum of its proper divisors (276466063).

945804665 is a wasteful number, since it uses less digits than its factorization.

945804665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14550859.

The product of its (nonzero) digits is 1036800, while the sum is 47.

The square root of 945804665 is about 30753.9373901944. The cubic root of 945804665 is about 981.5983444689.

The spelling of 945804665 in words is "nine hundred forty-five million, eight hundred four thousand, six hundred sixty-five".