70111808 has 56 divisors (see below), whose sum is σ = 158675832. Its totient is φ = 30449664.

The previous prime is 70111807. The next prime is 70111813. The reversal of 70111808 is 80811107.

It can be written as a sum of positive squares in 4 ways, for example, as 18386944 + 51724864 = 4288^2 + 7192^2 .

It is a Harshad number since it is a multiple of its sum of digits (26).

It is not an unprimeable number, because it can be changed into a prime (70111807) 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, 11666 + ... + 16622.

It is an arithmetic number, because the mean of its divisors is an integer number (2833497).

Almost surely, 2^70111808 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 70111808, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (79337916).

70111808 is an abundant number, since it is smaller than the sum of its proper divisors (88564024).

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

70111808 is a wasteful number, since it uses less digits than its factorization.

70111808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4999 (or 4989 counting only the distinct ones).

The product of its (nonzero) digits is 448, while the sum is 26.

The square root of 70111808 is about 8373.2794053465. The cubic root of 70111808 is about 412.3478383378.

The spelling of 70111808 in words is "seventy million, one hundred eleven thousand, eight hundred eight".