49716665 has 4 divisors (see below), whose sum is σ = 59660004. Its totient is φ = 39773328.

The previous prime is 49716661. The next prime is 49716677. The reversal of 49716665 is 56661794.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 17952169 + 31764496 = 4237^2 + 5636^2 .

It is a cyclic number.

It is not a de Polignac number, because 49716665 - 2² = 49716661 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (49716661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4971662 + ... + 4971671.

It is an arithmetic number, because the mean of its divisors is an integer number (14915001).

Almost surely, 2^49716665 is an apocalyptic number.

It is an amenable number.

49716665 is a deficient number, since it is larger than the sum of its proper divisors (9943339).

49716665 is an equidigital number, since it uses as much as digits as its factorization.

49716665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9943338.

The product of its digits is 272160, while the sum is 44.

The square root of 49716665 is about 7051.0045383619. The cubic root of 49716665 is about 367.7059545590.

The spelling of 49716665 in words is "forty-nine million, seven hundred sixteen thousand, six hundred sixty-five".