67621985 has 8 divisors (see below), whose sum is σ = 81312000. Its totient is φ = 53987184.

The previous prime is 67621973. The next prime is 67621987. The reversal of 67621985 is 58912676.

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 67621985 - 2⁶ = 67621921 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67621987) 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, 11057 + ... + 16046.

It is an arithmetic number, because the mean of its divisors is an integer number (10164000).

Almost surely, 2^67621985 is an apocalyptic number.

It is an amenable number.

67621985 is a deficient number, since it is larger than the sum of its proper divisors (13690015).

67621985 is a wasteful number, since it uses less digits than its factorization.

67621985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27607.

The product of its digits is 181440, while the sum is 44.

The square root of 67621985 is about 8223.2587822590. The cubic root of 67621985 is about 407.4077676515.

The spelling of 67621985 in words is "sixty-seven million, six hundred twenty-one thousand, nine hundred eighty-five".