67315640 has 64 divisors (see below), whose sum is σ = 177154560. Its totient is φ = 22538880.

The previous prime is 67315627. The next prime is 67315669. The reversal of 67315640 is 4651376.

It is a junction number, because it is equal to n+sod(n) for n = 67315597 and 67315606.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 9245 + ... + 14835.

It is an arithmetic number, because the mean of its divisors is an integer number (2768040).

Almost surely, 2^67315640 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 67315640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88577280).

67315640 is an abundant number, since it is smaller than the sum of its proper divisors (109838920).

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

67315640 is a wasteful number, since it uses less digits than its factorization.

67315640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5652 (or 5648 counting only the distinct ones).

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 67315640 is about 8204.6108987569. The cubic root of 67315640 is about 406.7916155813.

The spelling of 67315640 in words is "sixty-seven million, three hundred fifteen thousand, six hundred forty".