49687668 has 144 divisors (see below), whose sum is σ = 143829504. Its totient is φ = 14929920.

The previous prime is 49687639. The next prime is 49687681. The reversal of 49687668 is 86678694.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 512196 + ... + 512292.

It is an arithmetic number, because the mean of its divisors is an integer number (998816).

Almost surely, 2^49687668 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 49687668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (71914752).

49687668 is an abundant number, since it is smaller than the sum of its proper divisors (94141836).

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

49687668 is a wasteful number, since it uses less digits than its factorization.

49687668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164 (or 150 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 49687668 is about 7048.9480066177. The cubic root of 49687668 is about 367.6344530939.

The spelling of 49687668 in words is "forty-nine million, six hundred eighty-seven thousand, six hundred sixty-eight".