307285065 has 12 divisors (see below), whose sum is σ = 532627524. Its totient is φ = 163885344.

The previous prime is 307285057. The next prime is 307285067. The reversal of 307285065 is 560582703.

It can be written as a sum of positive squares in 2 ways, for example, as 235561104 + 71723961 = 15348^2 + 8469^2 .

It is not a de Polignac number, because 307285065 - 2³ = 307285057 is a prime.

It is a super-2 number, since 2×307285065² = 188848222344108450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (307285067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3414234 + ... + 3414323.

It is an arithmetic number, because the mean of its divisors is an integer number (44385627).

Almost surely, 2^307285065 is an apocalyptic number.

It is an amenable number.

307285065 is a deficient number, since it is larger than the sum of its proper divisors (225342459).

307285065 is a wasteful number, since it uses less digits than its factorization.

307285065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6828568 (or 6828565 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 36.

The square root of 307285065 is about 17529.5483398746. The cubic root of 307285065 is about 674.8084065282.

The spelling of 307285065 in words is "three hundred seven million, two hundred eighty-five thousand, sixty-five".