69808090 has 64 divisors (see below), whose sum is σ = 145981440. Its totient is φ = 23768640.

The previous prime is 69808073. The next prime is 69808091. The reversal of 69808090 is 9080896.

It is a happy number.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (69808091) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 265299 + ... + 265561.

It is an arithmetic number, because the mean of its divisors is an integer number (2280960).

Almost surely, 2^69808090 is an apocalyptic number.

69808090 is an abundant number, since it is smaller than the sum of its proper divisors (76173350).

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

69808090 is a wasteful number, since it uses less digits than its factorization.

69808090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 427.

The product of its (nonzero) digits is 31104, while the sum is 40.

The square root of 69808090 is about 8355.1235777815. The cubic root of 69808090 is about 411.7515586719.

The spelling of 69808090 in words is "sixty-nine million, eight hundred eight thousand, ninety".