67729164 has 24 divisors (see below), whose sum is σ = 158195520. Its totient is φ = 22553424.

The previous prime is 67729153. The next prime is 67729187. The reversal of 67729164 is 46192776.

It is a super-2 number, since 2×67729164² = 9174479312277792, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12867 + ... + 17349.

It is an arithmetic number, because the mean of its divisors is an integer number (6591480).

Almost surely, 2^67729164 is an apocalyptic number.

It is an amenable number.

67729164 is an abundant number, since it is smaller than the sum of its proper divisors (90466356).

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

67729164 is a wasteful number, since it uses less digits than its factorization.

67729164 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5749 (or 5747 counting only the distinct ones).

The product of its digits is 127008, while the sum is 42.

The square root of 67729164 is about 8229.7730223865. The cubic root of 67729164 is about 407.6228974294.

The spelling of 67729164 in words is "sixty-seven million, seven hundred twenty-nine thousand, one hundred sixty-four".