1072308665 has 8 divisors (see below), whose sum is σ = 1287566280. Its totient is φ = 857316352.

The previous prime is 1072308659. The next prime is 1072308683. The reversal of 1072308665 is 5668032701.

It can be written as a sum of positive squares in 4 ways, for example, as 36820624 + 1035488041 = 6068^2 + 32179^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1072308665 - 2⁴ = 1072308649 is a prime.

It is a super-2 number, since 2×1072308665² = 2299691746068164450, which contains 22 as substring.

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, 57320 + ... + 73689.

It is an arithmetic number, because the mean of its divisors is an integer number (160945785).

Almost surely, 2^1072308665 is an apocalyptic number.

It is an amenable number.

1072308665 is a deficient number, since it is larger than the sum of its proper divisors (215257615).

1072308665 is a wasteful number, since it uses less digits than its factorization.

1072308665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132651.

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 1072308665 is about 32746.1244271746. The cubic root of 1072308665 is about 1023.5442081764.

The spelling of 1072308665 in words is "one billion, seventy-two million, three hundred eight thousand, six hundred sixty-five".