345678961 has 8 divisors (see below), whose sum is σ = 348636960. Its totient is φ = 342727968.

The previous prime is 345678943. The next prime is 345678967. The reversal of 345678961 is 169876543.

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

It is a cyclic number.

It is not a de Polignac number, because 345678961 - 2⁹ = 345678449 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345678967) 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 7 ways as a sum of consecutive naturals, for example, 151350 + ... + 153616.

It is an arithmetic number, because the mean of its divisors is an integer number (43579620).

Almost surely, 2^345678961 is an apocalyptic number.

It is an amenable number.

345678961 is a deficient number, since it is larger than the sum of its proper divisors (2957999).

345678961 is a wasteful number, since it uses less digits than its factorization.

345678961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3503.

The product of its digits is 1088640, while the sum is 49.

The square root of 345678961 is about 18592.4436532695. The cubic root of 345678961 is about 701.8176983246.

The spelling of 345678961 in words is "three hundred forty-five million, six hundred seventy-eight thousand, nine hundred sixty-one".