67221801 has 12 divisors (see below), whose sum is σ = 101320128. Its totient is φ = 42865944.

The previous prime is 67221799. The next prime is 67221809. The reversal of 67221801 is 10812276.

It is not a de Polignac number, because 67221801 - 2¹ = 67221799 is a prime.

It is not an unprimeable number, because it can be changed into a prime (67221809) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 162165 + ... + 162578.

It is an arithmetic number, because the mean of its divisors is an integer number (8443344).

Almost surely, 2^67221801 is an apocalyptic number.

It is an amenable number.

67221801 is a deficient number, since it is larger than the sum of its proper divisors (34098327).

67221801 is a wasteful number, since it uses less digits than its factorization.

67221801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324772 (or 324769 counting only the distinct ones).

The product of its (nonzero) digits is 1344, while the sum is 27.

The square root of 67221801 is about 8198.8902297811. The cubic root of 67221801 is about 406.6025031648.

The spelling of 67221801 in words is "sixty-seven million, two hundred twenty-one thousand, eight hundred one".