349788765 has 16 divisors (see below), whose sum is σ = 589118400. Its totient is φ = 176735232.

The previous prime is 349788763. The next prime is 349788773. The reversal of 349788765 is 567887943.

It is not a de Polignac number, because 349788765 - 2¹ = 349788763 is a prime.

It is a super-3 number, since 3×349788765³ (a number of 27 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349788763) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 613380 + ... + 613949.

It is an arithmetic number, because the mean of its divisors is an integer number (36819900).

Almost surely, 2^349788765 is an apocalyptic number.

It is an amenable number.

349788765 is a deficient number, since it is larger than the sum of its proper divisors (239329635).

349788765 is a wasteful number, since it uses less digits than its factorization.

349788765 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1227356.

The product of its digits is 10160640, while the sum is 57.

The square root of 349788765 is about 18702.6405889650. The cubic root of 349788765 is about 704.5880698040.

The spelling of 349788765 in words is "three hundred forty-nine million, seven hundred eighty-eight thousand, seven hundred sixty-five".