67729065 has 16 divisors (see below), whose sum is σ = 112104000. Its totient is φ = 34876352.

The previous prime is 67729063. The next prime is 67729069. The reversal of 67729065 is 56092776.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 67729065 - 2¹ = 67729063 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67729061) 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, 77415 + ... + 78284.

It is an arithmetic number, because the mean of its divisors is an integer number (7006500).

Almost surely, 2^67729065 is an apocalyptic number.

It is an amenable number.

67729065 is a deficient number, since it is larger than the sum of its proper divisors (44374935).

67729065 is a wasteful number, since it uses less digits than its factorization.

67729065 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 155736.

The product of its (nonzero) digits is 158760, while the sum is 42.

The square root of 67729065 is about 8229.7670076376. The cubic root of 67729065 is about 407.6226988213.

The spelling of 67729065 in words is "sixty-seven million, seven hundred twenty-nine thousand, sixty-five".