67618240 has 56 divisors (see below), whose sum is σ = 165396672. Its totient is φ = 26311680.

The previous prime is 67618237. The next prime is 67618241. The reversal of 67618240 is 4281676.

It is a junction number, because it is equal to n+sod(n) for n = 67618196 and 67618205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67618241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8985 + ... + 14695.

It is an arithmetic number, because the mean of its divisors is an integer number (2953512).

Almost surely, 2^67618240 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 67618240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82698336).

67618240 is an abundant number, since it is smaller than the sum of its proper divisors (97778432).

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

67618240 is a wasteful number, since it uses less digits than its factorization.

67618240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5765 (or 5755 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 67618240 is about 8223.0310713264. The cubic root of 67618240 is about 407.4002465755.

The spelling of 67618240 in words is "sixty-seven million, six hundred eighteen thousand, two hundred forty".