345020691 has 8 divisors (see below), whose sum is σ = 470726080. Its totient is φ = 224664552.

The previous prime is 345020651. The next prime is 345020707. The reversal of 345020691 is 196020543.

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

It is not a de Polignac number, because 345020691 - 2¹⁰ = 345019667 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (345020651) 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 in 7 ways as a sum of consecutive naturals, for example, 1337161 + ... + 1337418.

It is an arithmetic number, because the mean of its divisors is an integer number (58840760).

Almost surely, 2^345020691 is an apocalyptic number.

345020691 is a deficient number, since it is larger than the sum of its proper divisors (125705389).

345020691 is a wasteful number, since it uses less digits than its factorization.

345020691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2674625.

The product of its (nonzero) digits is 6480, while the sum is 30.

The square root of 345020691 is about 18574.7325956526. The cubic root of 345020691 is about 701.3719291291.

The spelling of 345020691 in words is "three hundred forty-five million, twenty thousand, six hundred ninety-one".