67664896 has 132 divisors (see below), whose sum is σ = 161827632. Its totient is φ = 28114944.

The previous prime is 67664881. The next prime is 67664939. The reversal of 67664896 is 69846676.

It is a Harshad number since it is a multiple of its sum of digits (52).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2941941 + ... + 2941963.

Almost surely, 2^67664896 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67664896, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80913816).

67664896 is an abundant number, since it is smaller than the sum of its proper divisors (94162736).

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

67664896 is a wasteful number, since it uses less digits than its factorization.

67664896 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86 (or 55 counting only the distinct ones).

The product of its digits is 2612736, while the sum is 52.

The square root of 67664896 is about 8225.8674922466. The cubic root of 67664896 is about 407.4939259135.

The spelling of 67664896 in words is "sixty-seven million, six hundred sixty-four thousand, eight hundred ninety-six".