67220620 has 12 divisors (see below), whose sum is σ = 141163344. Its totient is φ = 26888240.

The previous prime is 67220609. The next prime is 67220623. The reversal of 67220620 is 2602276.

It is a happy number.

It is a super-2 number, since 2×67220620² = 9037223506368800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67220623) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1680496 + ... + 1680535.

It is an arithmetic number, because the mean of its divisors is an integer number (11763612).

Almost surely, 2^67220620 is an apocalyptic number.

It is an amenable number.

67220620 is an abundant number, since it is smaller than the sum of its proper divisors (73942724).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

67220620 is a wasteful number, since it uses less digits than its factorization.

67220620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3361040 (or 3361038 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

The square root of 67220620 is about 8198.8182075223. The cubic root of 67220620 is about 406.6001219910.

Adding to 67220620 its reverse (2602276), we get a palindrome (69822896).

The spelling of 67220620 in words is "sixty-seven million, two hundred twenty thousand, six hundred twenty".