67213568 has 18 divisors (see below), whose sum is σ = 134165094. Its totient is φ = 33606656.

The previous prime is 67213547. The next prime is 67213579. The reversal of 67213568 is 86531276.

It can be written as a sum of positive squares in only one way, i.e., 66064384 + 1149184 = 8128^2 + 1072^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 131021 + ... + 131532.

Almost surely, 2^67213568 is an apocalyptic number.

It is an amenable number.

67213568 is a deficient number, since it is larger than the sum of its proper divisors (66951526).

67213568 is an equidigital number, since it uses as much as digits as its factorization.

67213568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 262569 (or 262555 counting only the distinct ones).

The product of its digits is 60480, while the sum is 38.

The square root of 67213568 is about 8198.3881342615. The cubic root of 67213568 is about 406.5859029199.

The spelling of 67213568 in words is "sixty-seven million, two hundred thirteen thousand, five hundred sixty-eight".