70163712 has 72 divisors (see below), whose sum is σ = 207506880. Its totient is φ = 23385600.

The previous prime is 70163711. The next prime is 70163741. The reversal of 70163712 is 21736107.

It is a tau number, because it is divible by the number of its divisors (72).

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (70163711) 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, 1837 + ... + 11987.

It is an arithmetic number, because the mean of its divisors is an integer number (2882040).

Almost surely, 2^70163712 is an apocalyptic number.

70163712 is a gapful number since it is divisible by the number (72) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70163712, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (103753440).

70163712 is an abundant number, since it is smaller than the sum of its proper divisors (137343168).

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

70163712 is a wasteful number, since it uses less digits than its factorization.

70163712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10176 (or 10156 counting only the distinct ones).

The product of its (nonzero) digits is 1764, while the sum is 27.

The square root of 70163712 is about 8376.3782149566. The cubic root of 70163712 is about 412.4495673880.

Adding to 70163712 its reverse (21736107), we get a palindrome (91899819).

The spelling of 70163712 in words is "seventy million, one hundred sixty-three thousand, seven hundred twelve".