345649378 has 8 divisors (see below), whose sum is σ = 518841180. Its totient is φ = 172702320.

The previous prime is 345649373. The next prime is 345649399. The reversal of 345649378 is 873946543.

345649378 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 345327889 + 321489 = 18583^2 + 567^2 .

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

It is not an unprimeable number, because it can be changed into a prime (345649373) 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, 57613 + ... + 63328.

Almost surely, 2^345649378 is an apocalyptic number.

345649378 is a deficient number, since it is larger than the sum of its proper divisors (173191802).

345649378 is a wasteful number, since it uses less digits than its factorization.

345649378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122372.

The product of its digits is 2177280, while the sum is 49.

The square root of 345649378 is about 18591.6480711098. The cubic root of 345649378 is about 701.7976773730.

The spelling of 345649378 in words is "three hundred forty-five million, six hundred forty-nine thousand, three hundred seventy-eight".