70687920384 has 243 divisors, whose sum is σ = 212191921669. Its totient is φ = 22631024640.

The previous prime is 70687920311. The next prime is 70687920427. The reversal of 70687920384 is 48302978607.

The square root of 70687920384 is 265872.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 37067030784 + 33620889600 = 192528^2 + 183360^2 .

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 70687920384.

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 26 ways as a sum of consecutive naturals, for example, 370093729 + ... + 370093919.

Almost surely, 2^70687920384 is an apocalyptic number.

70687920384 is the 265872-nd square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70687920384

70687920384 is an abundant number, since it is smaller than the sum of its proper divisors (141504001285).

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

70687920384 is an equidigital number, since it uses as much as digits as its factorization.

70687920384 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 462 (or 225 counting only the distinct ones).

The product of its (nonzero) digits is 4064256, while the sum is 54.

The spelling of 70687920384 in words is "seventy billion, six hundred eighty-seven million, nine hundred twenty thousand, three hundred eighty-four".