349664757 has 8 divisors (see below), whose sum is σ = 502082784. Its totient is φ = 215178288.

The previous prime is 349664753. The next prime is 349664801. The reversal of 349664757 is 757466943.

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

It is not a de Polignac number, because 349664757 - 2² = 349664753 is a prime.

It is a Smith number, since the sum of its digits (51) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (349664753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4482843 + ... + 4482920.

It is an arithmetic number, because the mean of its divisors is an integer number (62760348).

Almost surely, 2^349664757 is an apocalyptic number.

It is an amenable number.

349664757 is a deficient number, since it is larger than the sum of its proper divisors (152418027).

349664757 is a wasteful number, since it uses less digits than its factorization.

349664757 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8965779.

The product of its digits is 3810240, while the sum is 51.

The square root of 349664757 is about 18699.3250412949. The cubic root of 349664757 is about 704.5047958460.

The spelling of 349664757 in words is "three hundred forty-nine million, six hundred sixty-four thousand, seven hundred fifty-seven".