67916481 has 4 divisors (see below), whose sum is σ = 90555312. Its totient is φ = 45277652.

The previous prime is 67916467. The next prime is 67916489. The reversal of 67916481 is 18461976.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 67916481 - 2¹⁰ = 67915457 is a prime.

It is a super-2 number, since 2×67916481² = 9225296782846722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67916489) 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, 11319411 + ... + 11319416.

It is an arithmetic number, because the mean of its divisors is an integer number (22638828).

Almost surely, 2^67916481 is an apocalyptic number.

It is an amenable number.

67916481 is a deficient number, since it is larger than the sum of its proper divisors (22638831).

67916481 is a wasteful number, since it uses less digits than its factorization.

67916481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22638830.

The product of its digits is 72576, while the sum is 42.

The square root of 67916481 is about 8241.1456121100. The cubic root of 67916481 is about 407.9983359698.

The spelling of 67916481 in words is "sixty-seven million, nine hundred sixteen thousand, four hundred eighty-one".