67809693 has 16 divisors (see below), whose sum is σ = 104397440. Its totient is φ = 38347776.

The previous prime is 67809671. The next prime is 67809701. The reversal of 67809693 is 39690876.

It is a happy number.

It is not a de Polignac number, because 67809693 - 2¹² = 67805597 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67801693) 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, 14608 + ... + 18681.

It is an arithmetic number, because the mean of its divisors is an integer number (6524840).

Almost surely, 2^67809693 is an apocalyptic number.

It is an amenable number.

67809693 is a deficient number, since it is larger than the sum of its proper divisors (36587747).

67809693 is a wasteful number, since it uses less digits than its factorization.

67809693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33396.

The product of its (nonzero) digits is 489888, while the sum is 48.

The square root of 67809693 is about 8234.6641097254. The cubic root of 67809693 is about 407.7843860274.

The spelling of 67809693 in words is "sixty-seven million, eight hundred nine thousand, six hundred ninety-three".