70191716 has 72 divisors (see below), whose sum is σ = 151252920. Its totient is φ = 28374528.

The previous prime is 70191683. The next prime is 70191731. The reversal of 70191716 is 61719107.

It can be written as a sum of positive squares in 4 ways, for example, as 8726116 + 61465600 = 2954^2 + 7840^2 .

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 23 ways as a sum of consecutive naturals, for example, 301136 + ... + 301368.

It is an arithmetic number, because the mean of its divisors is an integer number (2100735).

Almost surely, 2^70191716 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 70191716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75626460).

70191716 is an abundant number, since it is smaller than the sum of its proper divisors (81061204).

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

70191716 is a wasteful number, since it uses less digits than its factorization.

70191716 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 333 (or 324 counting only the distinct ones).

The product of its (nonzero) digits is 2646, while the sum is 32.

The square root of 70191716 is about 8378.0496537082. The cubic root of 70191716 is about 412.5044328878.

It can be divided in two parts, 70191 and 716, that added together give a palindrome (70907).

The spelling of 70191716 in words is "seventy million, one hundred ninety-one thousand, seven hundred sixteen".