67491841 has 4 divisors (see below), whose sum is σ = 67513392. Its totient is φ = 67470292.

The previous prime is 67491839. The next prime is 67491871. The reversal of 67491841 is 14819476.

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 67491841 - 2¹ = 67491839 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67491794 and 67491803.

It is not an unprimeable number, because it can be changed into a prime (67491871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5071 + ... + 12676.

It is an arithmetic number, because the mean of its divisors is an integer number (16878348).

Almost surely, 2^67491841 is an apocalyptic number.

It is an amenable number.

67491841 is a deficient number, since it is larger than the sum of its proper divisors (21551).

67491841 is a wasteful number, since it uses less digits than its factorization.

67491841 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21550.

The product of its digits is 48384, while the sum is 40.

The square root of 67491841 is about 8215.3418066444. The cubic root of 67491841 is about 407.1462366924.

The spelling of 67491841 in words is "sixty-seven million, four hundred ninety-one thousand, eight hundred forty-one".