70931968 has 80 divisors (see below), whose sum is σ = 151240320. Its totient is φ = 33177600.

The previous prime is 70931963. The next prime is 70931989. The reversal of 70931968 is 86913907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70931963) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 650698 + ... + 650806.

It is an arithmetic number, because the mean of its divisors is an integer number (1890504).

Almost surely, 2^70931968 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 70931968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75620160).

70931968 is an abundant number, since it is smaller than the sum of its proper divisors (80308352).

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

70931968 is a wasteful number, since it uses less digits than its factorization.

70931968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 199 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 70931968 is about 8422.1118491742. Note that the first 3 decimals coincide. The cubic root of 70931968 is about 413.9494753468.

The spelling of 70931968 in words is "seventy million, nine hundred thirty-one thousand, nine hundred sixty-eight".