340605685 has 32 divisors (see below), whose sum is σ = 494807040. Its totient is φ = 219868992.

The previous prime is 340605641. The next prime is 340605721. The reversal of 340605685 is 586506043.

It is not a de Polignac number, because 340605685 - 2⁹ = 340605173 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 109522 + ... + 112588.

It is an arithmetic number, because the mean of its divisors is an integer number (15462720).

Almost surely, 2^340605685 is an apocalyptic number.

340605685 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

340605685 is a deficient number, since it is larger than the sum of its proper divisors (154201355).

340605685 is a wasteful number, since it uses less digits than its factorization.

340605685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3265.

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 340605685 is about 18455.5055471260. The cubic root of 340605685 is about 698.3674096010.

The spelling of 340605685 in words is "three hundred forty million, six hundred five thousand, six hundred eighty-five".