345997761 has 8 divisors (see below), whose sum is σ = 461473824. Its totient is φ = 230593440.

The previous prime is 345997759. The next prime is 345997783. The reversal of 345997761 is 167799543.

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

It is not a de Polignac number, because 345997761 - 2¹ = 345997759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (345997721) 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, 5436 + ... + 26861.

It is an arithmetic number, because the mean of its divisors is an integer number (57684228).

Almost surely, 2^345997761 is an apocalyptic number.

It is an amenable number.

345997761 is a deficient number, since it is larger than the sum of its proper divisors (115476063).

345997761 is a wasteful number, since it uses less digits than its factorization.

345997761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35871.

The product of its digits is 1428840, while the sum is 51.

The square root of 345997761 is about 18601.0150529481. The cubic root of 345997761 is about 702.0333808528.

The spelling of 345997761 in words is "three hundred forty-five million, nine hundred ninety-seven thousand, seven hundred sixty-one".