67404378 has 16 divisors (see below), whose sum is σ = 134953056. Its totient is φ = 22444080.

The previous prime is 67404377. The next prime is 67404391. The reversal of 67404378 is 87340476.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (67404377) 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, 625 + ... + 11627.

It is an arithmetic number, because the mean of its divisors is an integer number (8434566).

Almost surely, 2^67404378 is an apocalyptic number.

67404378 is an abundant number, since it is smaller than the sum of its proper divisors (67548678).

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

67404378 is a wasteful number, since it uses less digits than its factorization.

67404378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12029.

The product of its (nonzero) digits is 112896, while the sum is 39.

The square root of 67404378 is about 8210.0169305550. The cubic root of 67404378 is about 406.9702864129.

The spelling of 67404378 in words is "sixty-seven million, four hundred four thousand, three hundred seventy-eight".