67856334 has 128 divisors (see below), whose sum is σ = 182353920. Its totient is φ = 16329600.

The previous prime is 67856329. The next prime is 67856351. The reversal of 67856334 is 43365876.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 321489 + ... + 321699.

It is an arithmetic number, because the mean of its divisors is an integer number (1424640).

Almost surely, 2^67856334 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67856334, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91176960).

67856334 is an abundant number, since it is smaller than the sum of its proper divisors (114497586).

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

67856334 is a wasteful number, since it uses less digits than its factorization.

67856334 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 286.

The product of its digits is 362880, while the sum is 42.

The square root of 67856334 is about 8237.4956145664. The cubic root of 67856334 is about 407.8778589598.

The spelling of 67856334 in words is "sixty-seven million, eight hundred fifty-six thousand, three hundred thirty-four".