67685697 has 6 divisors (see below), whose sum is σ = 97768242. Its totient is φ = 45123792.

The previous prime is 67685677. The next prime is 67685701. The reversal of 67685697 is 79658676.

It is a happy number.

67685697 is a `hidden beast` number, since 6 + 76 + 8 + 569 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 39425841 + 28259856 = 6279^2 + 5316^2 .

It is not a de Polignac number, because 67685697 - 2⁸ = 67685441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67685627) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3760308 + ... + 3760325.

It is an arithmetic number, because the mean of its divisors is an integer number (16294707).

Almost surely, 2^67685697 is an apocalyptic number.

It is an amenable number.

67685697 is a deficient number, since it is larger than the sum of its proper divisors (30082545).

67685697 is a wasteful number, since it uses less digits than its factorization.

67685697 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7520639 (or 7520636 counting only the distinct ones).

The product of its digits is 3810240, while the sum is 54.

The square root of 67685697 is about 8227.1317602187. The cubic root of 67685697 is about 407.5356778076.

The spelling of 67685697 in words is "sixty-seven million, six hundred eighty-five thousand, six hundred ninety-seven".