67661101 has 8 divisors (see below), whose sum is σ = 70732800. Its totient is φ = 64600272.

The previous prime is 67661057. The next prime is 67661117. The reversal of 67661101 is 10116676.

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

It is a cyclic number.

It is not a de Polignac number, because 67661101 - 2¹⁵ = 67628333 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 67661101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67661171) 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 7 ways as a sum of consecutive naturals, for example, 11700 + ... + 16498.

It is an arithmetic number, because the mean of its divisors is an integer number (8841600).

Almost surely, 2^67661101 is an apocalyptic number.

It is an amenable number.

67661101 is a deficient number, since it is larger than the sum of its proper divisors (3071699).

67661101 is a wasteful number, since it uses less digits than its factorization.

67661101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5435.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 67661101 is about 8225.6368142533. The cubic root of 67661101 is about 407.4863076434.

Adding to 67661101 its reverse (10116676), we get a palindrome (77777777).

The spelling of 67661101 in words is "sixty-seven million, six hundred sixty-one thousand, one hundred one".