67687064 has 64 divisors (see below), whose sum is σ = 140616000. Its totient is φ = 30412800.

The previous prime is 67687051. The next prime is 67687093. The reversal of 67687064 is 46078676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 340037 + ... + 340235.

It is an arithmetic number, because the mean of its divisors is an integer number (2197125).

Almost surely, 2^67687064 is an apocalyptic number.

It is an amenable number.

67687064 is an abundant number, since it is smaller than the sum of its proper divisors (72928936).

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

67687064 is a wasteful number, since it uses less digits than its factorization.

67687064 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 324 (or 320 counting only the distinct ones).

The product of its (nonzero) digits is 338688, while the sum is 44.

The square root of 67687064 is about 8227.2148385708. The cubic root of 67687064 is about 407.5384213588.

The spelling of 67687064 in words is "sixty-seven million, six hundred eighty-seven thousand, sixty-four".