349785745 has 8 divisors (see below), whose sum is σ = 420742440. Its totient is φ = 279162240.

The previous prime is 349785739. The next prime is 349785757. The reversal of 349785745 is 547587943.

It can be written as a sum of positive squares in 4 ways, for example, as 693889 + 349091856 = 833^2 + 18684^2 .

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

It is not a de Polignac number, because 349785745 - 2¹³ = 349777553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 349785692 and 349785701.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80980 + ... + 85189.

It is an arithmetic number, because the mean of its divisors is an integer number (52592805).

Almost surely, 2^349785745 is an apocalyptic number.

It is an amenable number.

349785745 is a deficient number, since it is larger than the sum of its proper divisors (70956695).

349785745 is a wasteful number, since it uses less digits than its factorization.

349785745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 166595.

The product of its digits is 4233600, while the sum is 52.

The square root of 349785745 is about 18702.5598515283. The cubic root of 349785745 is about 704.5860420448.

The spelling of 349785745 in words is "three hundred forty-nine million, seven hundred eighty-five thousand, seven hundred forty-five".