70809822 has 64 divisors (see below), whose sum is σ = 164736000. Its totient is φ = 22516704.

The previous prime is 70809803. The next prime is 70809839. The reversal of 70809822 is 22890807.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 161079 + ... + 161517.

It is an arithmetic number, because the mean of its divisors is an integer number (2574000).

Almost surely, 2^70809822 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 70809822, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82368000).

70809822 is an abundant number, since it is smaller than the sum of its proper divisors (93926178).

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

70809822 is a wasteful number, since it uses less digits than its factorization.

70809822 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 582 (or 576 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 36.

The square root of 70809822 is about 8414.8572180400. The cubic root of 70809822 is about 413.7117295891.

It can be divided in two parts, 70809 and 822, that added together give a triangular number (71631 = T₃₇₈).

The spelling of 70809822 in words is "seventy million, eight hundred nine thousand, eight hundred twenty-two".