67838745 has 16 divisors (see below), whose sum is σ = 116891712. Its totient is φ = 33397440.

The previous prime is 67838717. The next prime is 67838747. The reversal of 67838745 is 54783876.

It is not a de Polignac number, because 67838745 - 2⁸ = 67838489 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a junction number, because it is equal to n+sod(n) for n = 67838694 and 67838703.

It is not an unprimeable number, because it can be changed into a prime (67838747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 173751 + ... + 174140.

It is an arithmetic number, because the mean of its divisors is an integer number (7305732).

Almost surely, 2^67838745 is an apocalyptic number.

67838745 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

67838745 is a deficient number, since it is larger than the sum of its proper divisors (49052967).

67838745 is a wasteful number, since it uses less digits than its factorization.

67838745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 347912.

The product of its digits is 1128960, while the sum is 48.

The square root of 67838745 is about 8236.4279272024. The cubic root of 67838745 is about 407.8426139886.

The spelling of 67838745 in words is "sixty-seven million, eight hundred thirty-eight thousand, seven hundred forty-five".