67636541 has 4 divisors (see below), whose sum is σ = 77298912. Its totient is φ = 57974172.

The previous prime is 67636531. The next prime is 67636559. The reversal of 67636541 is 14563676.

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 67636541 - 2⁶ = 67636477 is a prime.

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

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 67636495 and 67636504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67636501) 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, 4831175 + ... + 4831188.

It is an arithmetic number, because the mean of its divisors is an integer number (19324728).

Almost surely, 2^67636541 is an apocalyptic number.

It is an amenable number.

67636541 is a deficient number, since it is larger than the sum of its proper divisors (9662371).

67636541 is an equidigital number, since it uses as much as digits as its factorization.

67636541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9662370.

The product of its digits is 90720, while the sum is 38.

The square root of 67636541 is about 8224.1437852217. The cubic root of 67636541 is about 407.4369978001.

The spelling of 67636541 in words is "sixty-seven million, six hundred thirty-six thousand, five hundred forty-one".