345520785 has 8 divisors (see below), whose sum is σ = 552833280. Its totient is φ = 184277744.

The previous prime is 345520751. The next prime is 345520787. The reversal of 345520785 is 587025543.

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 345520785 - 2¹³ = 345512593 is a prime.

It is a super-2 number, since 2×345520785² = 238769225734032450, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (345520787) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11517345 + ... + 11517374.

It is an arithmetic number, because the mean of its divisors is an integer number (69104160).

Almost surely, 2^345520785 is an apocalyptic number.

It is an amenable number.

345520785 is a deficient number, since it is larger than the sum of its proper divisors (207312495).

345520785 is a wasteful number, since it uses less digits than its factorization.

345520785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23034727.

The product of its (nonzero) digits is 168000, while the sum is 39.

The square root of 345520785 is about 18588.1893954199. The cubic root of 345520785 is about 701.7106359293.

The spelling of 345520785 in words is "three hundred forty-five million, five hundred twenty thousand, seven hundred eighty-five".