49640686 has 8 divisors (see below), whose sum is σ = 74617920. Its totient is φ = 24768048.

The previous prime is 49640659. The next prime is 49640707. The reversal of 49640686 is 68604694.

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

It is a congruent number.

It is an unprimeable number.

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, 24951 + ... + 26866.

It is an arithmetic number, because the mean of its divisors is an integer number (9327240).

Almost surely, 2^49640686 is an apocalyptic number.

49640686 is a deficient number, since it is larger than the sum of its proper divisors (24977234).

49640686 is a wasteful number, since it uses less digits than its factorization.

49640686 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52298.

The product of its (nonzero) digits is 248832, while the sum is 43.

The square root of 49640686 is about 7045.6146644562. The cubic root of 49640686 is about 367.5185447319.

The spelling of 49640686 in words is "forty-nine million, six hundred forty thousand, six hundred eighty-six".