340610665 has 8 divisors (see below), whose sum is σ = 409041288. Its totient is φ = 272282880.

The previous prime is 340610651. The next prime is 340610681. The reversal of 340610665 is 566016043.

It can be written as a sum of positive squares in 4 ways, for example, as 65415744 + 275194921 = 8088^2 + 16589^2 .

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

It is not a de Polignac number, because 340610665 - 2⁷ = 340610537 is a prime.

It is a super-2 number, since 2×340610665² = 232031250223484450, which contains 22 as substring.

It is a Duffinian number.

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, 18222 + ... + 31831.

It is an arithmetic number, because the mean of its divisors is an integer number (51130161).

Almost surely, 2^340610665 is an apocalyptic number.

It is an amenable number.

340610665 is a deficient number, since it is larger than the sum of its proper divisors (68430623).

340610665 is a wasteful number, since it uses less digits than its factorization.

340610665 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51419.

The product of its (nonzero) digits is 12960, while the sum is 31.

The square root of 340610665 is about 18455.6404657221. The cubic root of 340610665 is about 698.3708131973.

The spelling of 340610665 in words is "three hundred forty million, six hundred ten thousand, six hundred sixty-five".