70809582 has 16 divisors (see below), whose sum is σ = 141748992. Its totient is φ = 23581560.

The previous prime is 70809569. The next prime is 70809623. The reversal of 70809582 is 28590807.

It is a self number, because there is not a number n which added to its sum of digits gives 70809582.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2593 + ... + 12179.

It is an arithmetic number, because the mean of its divisors is an integer number (8859312).

Almost surely, 2^70809582 is an apocalyptic number.

70809582 is an abundant number, since it is smaller than the sum of its proper divisors (70939410).

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

70809582 is a wasteful number, since it uses less digits than its factorization.

70809582 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10823.

The product of its (nonzero) digits is 40320, while the sum is 39.

The square root of 70809582 is about 8414.8429575364. The cubic root of 70809582 is about 413.7112621825.

The spelling of 70809582 in words is "seventy million, eight hundred nine thousand, five hundred eighty-two".