67890064 has 20 divisors (see below), whose sum is σ = 143495280. Its totient is φ = 30859040.

The previous prime is 67890049. The next prime is 67890071. The reversal of 67890064 is 46009876.

It is a junction number, because it is equal to n+sod(n) for n = 67889999 and 67890026.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 192694 + ... + 193045.

It is an arithmetic number, because the mean of its divisors is an integer number (7174764).

Almost surely, 2^67890064 is an apocalyptic number.

It is an amenable number.

67890064 is an abundant number, since it is smaller than the sum of its proper divisors (75605216).

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

67890064 is a wasteful number, since it uses less digits than its factorization.

67890064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385758 (or 385752 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 40.

The square root of 67890064 is about 8239.5427057574. The cubic root of 67890064 is about 407.9454303539.

The spelling of 67890064 in words is "sixty-seven million, eight hundred ninety thousand, sixty-four".