67690464 has 192 divisors, whose sum is σ = 206841600. Its totient is φ = 19243008.

The previous prime is 67690423. The next prime is 67690499. The reversal of 67690464 is 46409676.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1147267 + ... + 1147325.

It is an arithmetic number, because the mean of its divisors is an integer number (1077300).

Almost surely, 2^67690464 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 67690464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103420800).

67690464 is an abundant number, since it is smaller than the sum of its proper divisors (139151136).

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

67690464 is a wasteful number, since it uses less digits than its factorization.

67690464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 67690464 is about 8227.4214672642. The cubic root of 67690464 is about 407.5452449543.

The spelling of 67690464 in words is "sixty-seven million, six hundred ninety thousand, four hundred sixty-four".