67616121 has 8 divisors (see below), whose sum is σ = 91633024. Its totient is φ = 44338320.

The previous prime is 67616111. The next prime is 67616141. The reversal of 67616121 is 12161676.

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

It is not a de Polignac number, because 67616121 - 2¹⁵ = 67583353 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67616111) 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, 184561 + ... + 184926.

It is an arithmetic number, because the mean of its divisors is an integer number (11454128).

Almost surely, 2^67616121 is an apocalyptic number.

67616121 is a gapful number since it is divisible by the number (61) formed by its first and last digit.

It is an amenable number.

67616121 is a deficient number, since it is larger than the sum of its proper divisors (24016903).

67616121 is a wasteful number, since it uses less digits than its factorization.

67616121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 369551.

The product of its digits is 3024, while the sum is 30.

The square root of 67616121 is about 8222.9022248839. The cubic root of 67616121 is about 407.3959908690.

Adding to 67616121 its reverse (12161676), we get a palindrome (79777797).

The spelling of 67616121 in words is "sixty-seven million, six hundred sixteen thousand, one hundred twenty-one".