67197081 has 24 divisors (see below), whose sum is σ = 104633760. Its totient is φ = 38247552.

The previous prime is 67197071. The next prime is 67197101. The reversal of 67197081 is 18079176.

It is not a de Polignac number, because 67197081 - 2¹⁸ = 66934937 is a prime.

It is a super-2 number, since 2×67197081² = 9030895389841122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67197071) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 44385 + ... + 45873.

It is an arithmetic number, because the mean of its divisors is an integer number (4359740).

Almost surely, 2^67197081 is an apocalyptic number.

It is an amenable number.

67197081 is a deficient number, since it is larger than the sum of its proper divisors (37436679).

67197081 is a wasteful number, since it uses less digits than its factorization.

67197081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1813 (or 1806 counting only the distinct ones).

The product of its (nonzero) digits is 21168, while the sum is 39.

The square root of 67197081 is about 8197.3825700647. The cubic root of 67197081 is about 406.5526560118.

The spelling of 67197081 in words is "sixty-seven million, one hundred ninety-seven thousand, eighty-one".