70871744 has 42 divisors (see below), whose sum is σ = 144071340. Its totient is φ = 34580992.

The previous prime is 70871743. The next prime is 70871753. The reversal of 70871744 is 44717807.

It is a junction number, because it is equal to n+sod(n) for n = 70871698 and 70871707.

It is not an unprimeable number, because it can be changed into a prime (70871743) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 517244 + ... + 517380.

It is an arithmetic number, because the mean of its divisors is an integer number (3430270).

Almost surely, 2^70871744 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 70871744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72035670).

70871744 is an abundant number, since it is smaller than the sum of its proper divisors (73199596).

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

70871744 is an equidigital number, since it uses as much as digits as its factorization.

70871744 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345 (or 198 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 38.

The square root of 70871744 is about 8418.5357396640. The cubic root of 70871744 is about 413.8322891064.

The spelling of 70871744 in words is "seventy million, eight hundred seventy-one thousand, seven hundred forty-four".