67716432 has 160 divisors (see below), whose sum is σ = 227168000. Its totient is φ = 19305216.

The previous prime is 67716427. The next prime is 67716433. The reversal of 67716432 is 23461776.

67716432 is a `hidden beast` number, since 6 + 7 + 7 + 1 + 643 + 2 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67716433) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 147948 + ... + 148404.

It is an arithmetic number, because the mean of its divisors is an integer number (1419800).

Almost surely, 2^67716432 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 67716432, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113584000).

67716432 is an abundant number, since it is smaller than the sum of its proper divisors (159451568).

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

67716432 is a wasteful number, since it uses less digits than its factorization.

67716432 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495 (or 469 counting only the distinct ones).

The product of its digits is 42336, while the sum is 36.

The square root of 67716432 is about 8228.9994531535. Note that the first 3 decimals coincide. The cubic root of 67716432 is about 407.5973536328.

It can be divided in two parts, 6771 and 6432, that added together give a triangular number (13203 = T₁₆₂).

The spelling of 67716432 in words is "sixty-seven million, seven hundred sixteen thousand, four hundred thirty-two".