67851642 has 32 divisors (see below), whose sum is σ = 139544640. Its totient is φ = 21985920.

The previous prime is 67851629. The next prime is 67851643. The reversal of 67851642 is 24615876.

It is a self number, because there is not a number n which added to its sum of digits gives 67851642.

It is not an unprimeable number, because it can be changed into a prime (67851643) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31533 + ... + 33615.

It is an arithmetic number, because the mean of its divisors is an integer number (4360770).

Almost surely, 2^67851642 is an apocalyptic number.

67851642 is an abundant number, since it is smaller than the sum of its proper divisors (71692998).

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

67851642 is a wasteful number, since it uses less digits than its factorization.

67851642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2238.

The product of its digits is 80640, while the sum is 39.

The square root of 67851642 is about 8237.2108143473. The cubic root of 67851642 is about 407.8684576904.

The spelling of 67851642 in words is "sixty-seven million, eight hundred fifty-one thousand, six hundred forty-two".