67649244 has 48 divisors (see below), whose sum is σ = 172801440. Its totient is φ = 20471040.

The previous prime is 67649243. The next prime is 67649299. The reversal of 67649244 is 44294676.

It is a junction number, because it is equal to n+sod(n) for n = 67649196 and 67649205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67649243) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5962 + ... + 13070.

It is an arithmetic number, because the mean of its divisors is an integer number (3600030).

Almost surely, 2^67649244 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 67649244, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (86400720).

67649244 is an abundant number, since it is smaller than the sum of its proper divisors (105152196).

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

67649244 is a wasteful number, since it uses less digits than its factorization.

67649244 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7190 (or 7188 counting only the distinct ones).

The product of its digits is 290304, while the sum is 42.

The square root of 67649244 is about 8224.9160482038. The cubic root of 67649244 is about 407.4625034815.

The spelling of 67649244 in words is "sixty-seven million, six hundred forty-nine thousand, two hundred forty-four".