342946661 has 4 divisors (see below), whose sum is σ = 363120012. Its totient is φ = 322773312.

The previous prime is 342946657. The next prime is 342946717. The reversal of 342946661 is 166649243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166649243 = 523 ⋅318641.

It can be written as a sum of positive squares in 2 ways, for example, as 219958561 + 122988100 = 14831^2 + 11090^2 .

It is a cyclic number.

It is not a de Polignac number, because 342946661 - 2² = 342946657 is a prime.

It is a super-2 number, since 2×342946661² = 235224824582097842, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (342946601) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10086650 + ... + 10086683.

It is an arithmetic number, because the mean of its divisors is an integer number (90780003).

Almost surely, 2^342946661 is an apocalyptic number.

It is an amenable number.

342946661 is a deficient number, since it is larger than the sum of its proper divisors (20173351).

342946661 is a wasteful number, since it uses less digits than its factorization.

342946661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20173350.

The product of its digits is 186624, while the sum is 41.

The square root of 342946661 is about 18518.8191038198. The cubic root of 342946661 is about 699.9637130850.

The spelling of 342946661 in words is "three hundred forty-two million, nine hundred forty-six thousand, six hundred sixty-one".