49617664 has 54 divisors (see below), whose sum is σ = 105296660. Its totient is φ = 23270400.

The previous prime is 49617653. The next prime is 49617671. The reversal of 49617664 is 46671694.

It is a self number, because there is not a number n which added to its sum of digits gives 49617664.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 491214 + ... + 491314.

Almost surely, 2^49617664 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 49617664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (52648330).

49617664 is an abundant number, since it is smaller than the sum of its proper divisors (55678996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

49617664 is an equidigital number, since it uses as much as digits as its factorization.

49617664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 237 (or 122 counting only the distinct ones).

The product of its digits is 217728, while the sum is 43.

The square root of 49617664 is about 7043.9806927617. The cubic root of 49617664 is about 367.4617209115.

The spelling of 49617664 in words is "forty-nine million, six hundred seventeen thousand, six hundred sixty-four".