340474657 has 6 divisors (see below), whose sum is σ = 361680998. Its totient is φ = 320446464.

The previous prime is 340474613. The next prime is 340474697. The reversal of 340474657 is 756474043.

It can be written as a sum of positive squares in 3 ways, for example, as 28987456 + 311487201 = 5384^2 + 17649^2 .

It is a de Polignac number, because none of the positive numbers 2^k-340474657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (340474697) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 588768 + ... + 589345.

Almost surely, 2^340474657 is an apocalyptic number.

It is an amenable number.

340474657 is a deficient number, since it is larger than the sum of its proper divisors (21206341).

340474657 is a wasteful number, since it uses less digits than its factorization.

340474657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178147 (or 1178130 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 40.

The square root of 340474657 is about 18451.9553706376. The cubic root of 340474657 is about 698.2778461896.

The spelling of 340474657 in words is "three hundred forty million, four hundred seventy-four thousand, six hundred fifty-seven".