70984540 has 48 divisors (see below), whose sum is σ = 163304064. Its totient is φ = 25704000.

The previous prime is 70984471. The next prime is 70984561. The reversal of 70984540 is 4548907.

It is a self number, because there is not a number n which added to its sum of digits gives 70984540.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 67015 + ... + 68065.

It is an arithmetic number, because the mean of its divisors is an integer number (3402168).

Almost surely, 2^70984540 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 70984540, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81652032).

70984540 is an abundant number, since it is smaller than the sum of its proper divisors (92319524).

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

70984540 is a wasteful number, since it uses less digits than its factorization.

70984540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378 (or 1376 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 70984540 is about 8425.2323410099. The cubic root of 70984540 is about 414.0517178111.

The spelling of 70984540 in words is "seventy million, nine hundred eighty-four thousand, five hundred forty".