67918464 has 192 divisors, whose sum is σ = 214812000. Its totient is φ = 20514816.

The previous prime is 67918463. The next prime is 67918469. The reversal of 67918464 is 46481976.

It is a tau number, because it is divible by the number of its divisors (192).

It is a super-2 number, since 2×67918464² = 9225835504238592, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (67918463) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 634699 + ... + 634805.

Almost surely, 2^67918464 is an apocalyptic number.

67918464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67918464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (107406000).

67918464 is an abundant number, since it is smaller than the sum of its proper divisors (146893536).

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

67918464 is a wasteful number, since it uses less digits than its factorization.

67918464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175 (or 160 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 67918464 is about 8241.2659221748. The cubic root of 67918464 is about 408.0023067920.

The spelling of 67918464 in words is "sixty-seven million, nine hundred eighteen thousand, four hundred sixty-four".