67229081 has 4 divisors (see below), whose sum is σ = 68792592. Its totient is φ = 65665572.

The previous prime is 67229077. The next prime is 67229089. The reversal of 67229081 is 18092276.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67229081 - 2² = 67229077 is a prime.

It is a super-2 number, since 2×67229081² = 9039498664209122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67229089) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 781691 + ... + 781776.

It is an arithmetic number, because the mean of its divisors is an integer number (17198148).

Almost surely, 2^67229081 is an apocalyptic number.

It is an amenable number.

67229081 is a deficient number, since it is larger than the sum of its proper divisors (1563511).

67229081 is a wasteful number, since it uses less digits than its factorization.

67229081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1563510.

The product of its (nonzero) digits is 12096, while the sum is 35.

The square root of 67229081 is about 8199.3341802856. The cubic root of 67229081 is about 406.6171807413.

The spelling of 67229081 in words is "sixty-seven million, two hundred twenty-nine thousand, eighty-one".