67907664 has 120 divisors (see below), whose sum is σ = 212358432. Its totient is φ = 20079360.

The previous prime is 67907659. The next prime is 67907683. The reversal of 67907664 is 46670976.

It is a super-2 number, since 2×67907664² = 9222901659873792, which contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 67614 + ... + 68610.

Almost surely, 2^67907664 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 67907664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106179216).

67907664 is an abundant number, since it is smaller than the sum of its proper divisors (144450768).

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

67907664 is a wasteful number, since it uses less digits than its factorization.

67907664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1065 (or 1056 counting only the distinct ones).

The product of its (nonzero) digits is 381024, while the sum is 45.

The square root of 67907664 is about 8240.6106569841. The cubic root of 67907664 is about 407.9806795926.

The spelling of 67907664 in words is "sixty-seven million, nine hundred seven thousand, six hundred sixty-four".