68147772 has 96 divisors (see below), whose sum is σ = 200116224. Its totient is φ = 17534400.

The previous prime is 68147759. The next prime is 68147789. The reversal of 68147772 is 27774186.

It is a Harshad number since it is a multiple of its sum of digits (42).

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, 120763 + ... + 121325.

It is an arithmetic number, because the mean of its divisors is an integer number (2084544).

Almost surely, 2^68147772 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 68147772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100058112).

68147772 is an abundant number, since it is smaller than the sum of its proper divisors (131968452).

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

68147772 is a wasteful number, since it uses less digits than its factorization.

68147772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 719 (or 717 counting only the distinct ones).

The product of its digits is 131712, while the sum is 42.

The square root of 68147772 is about 8255.1663823329. The cubic root of 68147772 is about 408.4609601702.

The spelling of 68147772 in words is "sixty-eight million, one hundred forty-seven thousand, seven hundred seventy-two".