345960781 has 4 divisors (see below), whose sum is σ = 348252064. Its totient is φ = 343669500.

The previous prime is 345960751. The next prime is 345960787. The reversal of 345960781 is 187069543.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 345960781 - 2¹⁵ = 345928013 is a prime.

It is a super-2 number, since 2×345960781² = 239377723980259922, 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 (345960787) 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, 1145415 + ... + 1145716.

It is an arithmetic number, because the mean of its divisors is an integer number (87063016).

Almost surely, 2^345960781 is an apocalyptic number.

It is an amenable number.

345960781 is a deficient number, since it is larger than the sum of its proper divisors (2291283).

345960781 is a wasteful number, since it uses less digits than its factorization.

345960781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2291282.

The product of its (nonzero) digits is 181440, while the sum is 43.

The square root of 345960781 is about 18600.0209946118. The cubic root of 345960781 is about 702.0083690152.

The spelling of 345960781 in words is "three hundred forty-five million, nine hundred sixty thousand, seven hundred eighty-one".