67672581 has 8 divisors (see below), whose sum is σ = 90292320. Its totient is φ = 45083952.

The previous prime is 67672531. The next prime is 67672651. The reversal of 67672581 is 18527676.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 67672581 - 2⁷ = 67672453 is a prime.

It is a super-2 number, since 2×67672581² = 9159156438403122, which contains 22 as substring.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67672511) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2110 + ... + 11823.

It is an arithmetic number, because the mean of its divisors is an integer number (11286540).

Almost surely, 2^67672581 is an apocalyptic number.

It is an amenable number.

67672581 is a deficient number, since it is larger than the sum of its proper divisors (22619739).

67672581 is a wasteful number, since it uses less digits than its factorization.

67672581 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15555.

The product of its digits is 141120, while the sum is 42.

The square root of 67672581 is about 8226.3346029687. The cubic root of 67672581 is about 407.5093522889.

The spelling of 67672581 in words is "sixty-seven million, six hundred seventy-two thousand, five hundred eighty-one".