70689258 has 48 divisors (see below), whose sum is σ = 162077760. Its totient is φ = 22220352.

The previous prime is 70689251. The next prime is 70689271. The reversal of 70689258 is 85298607.

It is not an unprimeable number, because it can be changed into a prime (70689251) 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 23 ways as a sum of consecutive naturals, for example, 29053 + ... + 31391.

It is an arithmetic number, because the mean of its divisors is an integer number (3376620).

Almost surely, 2^70689258 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70689258, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81038880).

70689258 is an abundant number, since it is smaller than the sum of its proper divisors (91388502).

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

70689258 is a wasteful number, since it uses less digits than its factorization.

70689258 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2443 (or 2440 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 70689258 is about 8407.6904081918. The cubic root of 70689258 is about 413.4767947785.

The spelling of 70689258 in words is "seventy million, six hundred eighty-nine thousand, two hundred fifty-eight".