70898724 has 72 divisors (see below), whose sum is σ = 194234040. Its totient is φ = 21676032.

The previous prime is 70898713. The next prime is 70898731. The reversal of 70898724 is 42789807.

It can be written as a sum of positive squares in 4 ways, for example, as 14197824 + 56700900 = 3768^2 + 7530^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 70898724.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 91812 + ... + 92580.

It is an arithmetic number, because the mean of its divisors is an integer number (2697695).

Almost surely, 2^70898724 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 70898724, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97117020).

70898724 is an abundant number, since it is smaller than the sum of its proper divisors (123335316).

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

70898724 is a wasteful number, since it uses less digits than its factorization.

70898724 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 989 (or 984 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 45.

The square root of 70898724 is about 8420.1380036197. The cubic root of 70898724 is about 413.8847960625.

The spelling of 70898724 in words is "seventy million, eight hundred ninety-eight thousand, seven hundred twenty-four".