340578946 has 4 divisors (see below), whose sum is σ = 510868422. Its totient is φ = 170289472.

The previous prime is 340578941. The next prime is 340578947. The reversal of 340578946 is 649875043.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 649875043 = 317 ⋅2050079.

It can be written as a sum of positive squares in only one way, i.e., 249166225 + 91412721 = 15785^2 + 9561^2 .

It is a junction number, because it is equal to n+sod(n) for n = 340578896 and 340578905.

It is not an unprimeable number, because it can be changed into a prime (340578941) 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 as a sum of consecutive naturals, namely, 85144735 + ... + 85144738.

Almost surely, 2^340578946 is an apocalyptic number.

340578946 is a deficient number, since it is larger than the sum of its proper divisors (170289476).

340578946 is a wasteful number, since it uses less digits than its factorization.

340578946 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 170289475.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 340578946 is about 18454.7811149306. The cubic root of 340578946 is about 698.3491341820.

The spelling of 340578946 in words is "three hundred forty million, five hundred seventy-eight thousand, nine hundred forty-six".