67878342 has 48 divisors (see below), whose sum is σ = 169996320. Its totient is φ = 19172736.

The previous prime is 67878337. The next prime is 67878347. The reversal of 67878342 is 24387876.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (67878337) and next prime (67878347).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67878347) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8188 + ... + 14240.

It is an arithmetic number, because the mean of its divisors is an integer number (3541590).

Almost surely, 2^67878342 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67878342, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84998160).

67878342 is an abundant number, since it is smaller than the sum of its proper divisors (102117978).

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

67878342 is a wasteful number, since it uses less digits than its factorization.

67878342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6157 (or 6154 counting only the distinct ones).

The product of its digits is 451584, while the sum is 45.

The square root of 67878342 is about 8238.8313491660. The cubic root of 67878342 is about 407.9219501797.

It can be divided in two parts, 6787 and 8342, that added together give a square (15129 = 123²).

The spelling of 67878342 in words is "sixty-seven million, eight hundred seventy-eight thousand, three hundred forty-two".