69820812 has 48 divisors (see below), whose sum is σ = 182358400. Its totient is φ = 23101200.

The previous prime is 69820789. The next prime is 69820823. The reversal of 69820812 is 21802896.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12687 + ... + 17337.

Almost surely, 2^69820812 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 69820812, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (91179200).

69820812 is an abundant number, since it is smaller than the sum of its proper divisors (112537588).

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

69820812 is a wasteful number, since it uses less digits than its factorization.

69820812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4803 (or 4795 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 69820812 is about 8355.8848723519. The cubic root of 69820812 is about 411.7765700287.

The spelling of 69820812 in words is "sixty-nine million, eight hundred twenty thousand, eight hundred twelve".