347378825 has 12 divisors (see below), whose sum is σ = 435193500. Its totient is φ = 275036160.

The previous prime is 347378819. The next prime is 347378861. The reversal of 347378825 is 528873743.

It can be written as a sum of positive squares in 6 ways, for example, as 15264649 + 332114176 = 3907^2 + 18224^2 .

It is not a de Polignac number, because 347378825 - 2⁴ = 347378809 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 347378825.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 69200 + ... + 74049.

It is an arithmetic number, because the mean of its divisors is an integer number (36266125).

Almost surely, 2^347378825 is an apocalyptic number.

It is an amenable number.

347378825 is a deficient number, since it is larger than the sum of its proper divisors (87814675).

347378825 is a wasteful number, since it uses less digits than its factorization.

347378825 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143356 (or 143351 counting only the distinct ones).

The product of its digits is 1128960, while the sum is 47.

The square root of 347378825 is about 18638.1014322811. The cubic root of 347378825 is about 702.9662056549.

The spelling of 347378825 in words is "three hundred forty-seven million, three hundred seventy-eight thousand, eight hundred twenty-five".