67404380 has 48 divisors (see below), whose sum is σ = 147342720. Its totient is φ = 25878528.

The previous prime is 67404377. The next prime is 67404391. The reversal of 67404380 is 8340476.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57884 + ... + 59036.

It is an arithmetic number, because the mean of its divisors is an integer number (3069640).

Almost surely, 2^67404380 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 67404380, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (73671360).

67404380 is an abundant number, since it is smaller than the sum of its proper divisors (79938340).

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

67404380 is a wasteful number, since it uses less digits than its factorization.

67404380 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278 (or 1276 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 32.

The square root of 67404380 is about 8210.0170523574. The cubic root of 67404380 is about 406.9702904380.

The spelling of 67404380 in words is "sixty-seven million, four hundred four thousand, three hundred eighty".