67870464 has 72 divisors (see below), whose sum is σ = 183469440. Its totient is φ = 22268928.

The previous prime is 67870433. The next prime is 67870519. The reversal of 67870464 is 46407876.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50797 + ... + 52115.

Almost surely, 2^67870464 is an apocalyptic number.

67870464 is a gapful number since it is divisible by the number (64) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67870464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91734720).

67870464 is an abundant number, since it is smaller than the sum of its proper divisors (115598976).

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

67870464 is a wasteful number, since it uses less digits than its factorization.

67870464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1405 (or 1391 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The square root of 67870464 is about 8238.3532335049. The cubic root of 67870464 is about 407.9061683492.

The spelling of 67870464 in words is "sixty-seven million, eight hundred seventy thousand, four hundred sixty-four".