345464778 has 8 divisors (see below), whose sum is σ = 690929568. Its totient is φ = 115154924.

The previous prime is 345464773. The next prime is 345464813. The reversal of 345464778 is 877464543.

It is a happy number.

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

345464778 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (345464773) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28788726 + ... + 28788737.

It is an arithmetic number, because the mean of its divisors is an integer number (86366196).

Almost surely, 2^345464778 is an apocalyptic number.

345464778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

345464778 is a wasteful number, since it uses less digits than its factorization.

345464778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57577468.

The product of its digits is 2257920, while the sum is 48.

The square root of 345464778 is about 18586.6828132402. The cubic root of 345464778 is about 701.6727194151.

The spelling of 345464778 in words is "three hundred forty-five million, four hundred sixty-four thousand, seven hundred seventy-eight".