70689018 has 16 divisors (see below), whose sum is σ = 145199520. Its totient is φ = 22926096.

The previous prime is 70689013. The next prime is 70689023. The reversal of 70689018 is 81098607.

It is an interprime number because it is at equal distance from previous prime (70689013) and next prime (70689023).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (70689013) 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 7 ways as a sum of consecutive naturals, for example, 158988 + ... + 159431.

It is an arithmetic number, because the mean of its divisors is an integer number (9074970).

Almost surely, 2^70689018 is an apocalyptic number.

70689018 is an abundant number, since it is smaller than the sum of its proper divisors (74510502).

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

70689018 is a wasteful number, since it uses less digits than its factorization.

70689018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318461.

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

The square root of 70689018 is about 8407.6761355323. The cubic root of 70689018 is about 413.4763268406.

The spelling of 70689018 in words is "seventy million, six hundred eighty-nine thousand, eighteen".