67916018 has 4 divisors (see below), whose sum is σ = 101874030. Its totient is φ = 33958008.

The previous prime is 67915993. The next prime is 67916027. The reversal of 67916018 is 81061976.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 66961489 + 954529 = 8183^2 + 977^2 .

It is a super-2 number, since 2×67916018² = 9225171001952648, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16979003 + ... + 16979006.

Almost surely, 2^67916018 is an apocalyptic number.

67916018 is a deficient number, since it is larger than the sum of its proper divisors (33958012).

67916018 is a wasteful number, since it uses less digits than its factorization.

67916018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33958011.

The product of its (nonzero) digits is 18144, while the sum is 38.

The square root of 67916018 is about 8241.1175213074. The cubic root of 67916018 is about 407.9974088327.

The spelling of 67916018 in words is "sixty-seven million, nine hundred sixteen thousand, eighteen".