68332464 has 80 divisors (see below), whose sum is σ = 197130240. Its totient is φ = 22662720.

The previous prime is 68332409. The next prime is 68332499. The reversal of 68332464 is 46423386.

It is a happy number.

It is a super-2 number, since 2×68332464² = 9338651272622592, which contains 22 as substring.

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 an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 158329 + ... + 158759.

It is an arithmetic number, because the mean of its divisors is an integer number (2464128).

Almost surely, 2^68332464 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 68332464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (98565120).

68332464 is an abundant number, since it is smaller than the sum of its proper divisors (128797776).

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

68332464 is a wasteful number, since it uses less digits than its factorization.

68332464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815 (or 803 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 68332464 is about 8266.3452625692. The cubic root of 68332464 is about 408.8296267733.

The spelling of 68332464 in words is "sixty-eight million, three hundred thirty-two thousand, four hundred sixty-four".