914491665 has 12 divisors (see below), whose sum is σ = 1585118964. Its totient is φ = 487728864.

The previous prime is 914491663. The next prime is 914491691. The reversal of 914491665 is 566194419.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 439992576 + 474499089 = 20976^2 + 21783^2 .

It is not a de Polignac number, because 914491665 - 2¹ = 914491663 is a prime.

It is a super-3 number, since 3×914491665³ (a number of 28 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 20322037 = 914491665 / (9 + 1 + 4 + 4 + 9 + 1 + 6 + 6 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 914491665.

It is not an unprimeable number, because it can be changed into a prime (914491663) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10160974 + ... + 10161063.

It is an arithmetic number, because the mean of its divisors is an integer number (132093247).

Almost surely, 2^914491665 is an apocalyptic number.

It is an amenable number.

914491665 is a deficient number, since it is larger than the sum of its proper divisors (670627299).

914491665 is a wasteful number, since it uses less digits than its factorization.

914491665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20322048 (or 20322045 counting only the distinct ones).

The product of its digits is 233280, while the sum is 45.

The square root of 914491665 is about 30240.5632388023. The cubic root of 914491665 is about 970.6438722960.

The spelling of 914491665 in words is "nine hundred fourteen million, four hundred ninety-one thousand, six hundred sixty-five".