69816220 has 12 divisors (see below), whose sum is σ = 146614104. Its totient is φ = 27926480.

The previous prime is 69816199. The next prime is 69816223. The reversal of 69816220 is 2261896.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69816223) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 1745386 + ... + 1745425.

It is an arithmetic number, because the mean of its divisors is an integer number (12217842).

Almost surely, 2^69816220 is an apocalyptic number.

It is an amenable number.

69816220 is an abundant number, since it is smaller than the sum of its proper divisors (76797884).

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

69816220 is a wasteful number, since it uses less digits than its factorization.

69816220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3490820 (or 3490818 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 34.

The square root of 69816220 is about 8355.6100914296. The cubic root of 69816220 is about 411.7675425415.

The spelling of 69816220 in words is "sixty-nine million, eight hundred sixteen thousand, two hundred twenty".