67640104 has 32 divisors (see below), whose sum is σ = 146390400. Its totient is φ = 28699200.

The previous prime is 67640101. The next prime is 67640117. The reversal of 67640104 is 40104676.

It is a Harshad number since it is a multiple of its sum of digits (28).

It is not an unprimeable number, because it can be changed into a prime (67640101) 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, 324 + ... + 11635.

It is an arithmetic number, because the mean of its divisors is an integer number (4574700).

Almost surely, 2^67640104 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 67640104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73195200).

67640104 is an abundant number, since it is smaller than the sum of its proper divisors (78750296).

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

67640104 is a wasteful number, since it uses less digits than its factorization.

67640104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12073 (or 12069 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 67640104 is about 8224.3604006634. The cubic root of 67640104 is about 407.4441520814. Note that the first 3 decimals are identical.

The spelling of 67640104 in words is "sixty-seven million, six hundred forty thousand, one hundred four".