349780761 has 56 divisors (see below), whose sum is σ = 583609536. Its totient is φ = 207735840.

The previous prime is 349780759. The next prime is 349780777. The reversal of 349780761 is 167087943.

It is not a de Polignac number, because 349780761 - 2¹ = 349780759 is a prime.

It is not an unprimeable number, because it can be changed into a prime (349787761) by changing a digit.

It is a polite number, since it can be written in 55 ways as a sum of consecutive naturals, for example, 424596 + ... + 425418.

Almost surely, 2^349780761 is an apocalyptic number.

It is an amenable number.

349780761 is a deficient number, since it is larger than the sum of its proper divisors (233828775).

349780761 is an equidigital number, since it uses as much as digits as its factorization.

349780761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 905 (or 890 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 349780761 is about 18702.4266072614. The cubic root of 349780761 is about 704.5826955453.

The spelling of 349780761 in words is "three hundred forty-nine million, seven hundred eighty thousand, seven hundred sixty-one".