67216261 has 8 divisors (see below), whose sum is σ = 78692544. Its totient is φ = 56208480.

The previous prime is 67216213. The next prime is 67216273. The reversal of 67216261 is 16261276.

It is a happy number.

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 67216261 - 2¹⁷ = 67085189 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67216211) 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, 116815 + ... + 117388.

It is an arithmetic number, because the mean of its divisors is an integer number (9836568).

Almost surely, 2^67216261 is an apocalyptic number.

It is an amenable number.

67216261 is a deficient number, since it is larger than the sum of its proper divisors (11476283).

67216261 is a wasteful number, since it uses less digits than its factorization.

67216261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234251.

The product of its digits is 6048, while the sum is 31.

The square root of 67216261 is about 8198.5523722179. The cubic root of 67216261 is about 406.5913329804.

The spelling of 67216261 in words is "sixty-seven million, two hundred sixteen thousand, two hundred sixty-one".