340302665 has 16 divisors (see below), whose sum is σ = 426229776. Its totient is φ = 260582400.

The previous prime is 340302661. The next prime is 340302667. The reversal of 340302665 is 566203043.

It can be written as a sum of positive squares in 8 ways, for example, as 15618304 + 324684361 = 3952^2 + 18019^2 .

It is not a de Polignac number, because 340302665 - 2² = 340302661 is a prime.

It is a super-2 number, since 2×340302665² = 231611807612204450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340302661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4796 + ... + 26525.

It is an arithmetic number, because the mean of its divisors is an integer number (26639361).

Almost surely, 2^340302665 is an apocalyptic number.

It is an amenable number.

340302665 is a deficient number, since it is larger than the sum of its proper divisors (85927111).

340302665 is a wasteful number, since it uses less digits than its factorization.

340302665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31420.

The product of its (nonzero) digits is 12960, while the sum is 29.

The square root of 340302665 is about 18447.2942460405. The cubic root of 340302665 is about 698.1602471954.

The spelling of 340302665 in words is "three hundred forty million, three hundred two thousand, six hundred sixty-five".