70069818 has 64 divisors (see below), whose sum is σ = 182649600. Its totient is φ = 17390592.

The previous prime is 70069817. The next prime is 70069819. The reversal of 70069818 is 81896007.

It is an interprime number because it is at equal distance from previous prime (70069817) and next prime (70069819).

It is a Harshad number since it is a multiple of its sum of digits (39).

It is not an unprimeable number, because it can be changed into a prime (70069817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5508 + ... + 13056.

It is an arithmetic number, because the mean of its divisors is an integer number (2853900).

Almost surely, 2^70069818 is an apocalyptic number.

70069818 is a gapful number since it is divisible by the number (78) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 70069818, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91324800).

70069818 is an abundant number, since it is smaller than the sum of its proper divisors (112579782).

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

70069818 is a wasteful number, since it uses less digits than its factorization.

70069818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7591.

The product of its (nonzero) digits is 24192, while the sum is 39.

The square root of 70069818 is about 8370.7716490178. The cubic root of 70069818 is about 412.2655034504.

The spelling of 70069818 in words is "seventy million, sixty-nine thousand, eight hundred eighteen".