69663140 has 24 divisors (see below), whose sum is σ = 147043512. Its totient is φ = 27722240.

The previous prime is 69663109. The next prime is 69663149. The reversal of 69663140 is 4136696.

It can be written as a sum of positive squares in 4 ways, for example, as 17505856 + 52157284 = 4184^2 + 7222^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 69663140.

It is not an unprimeable number, because it can be changed into a prime (69663149) 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 7 ways as a sum of consecutive naturals, for example, 4901 + ... + 12780.

It is an arithmetic number, because the mean of its divisors is an integer number (6126813).

Almost surely, 2^69663140 is an apocalyptic number.

It is an amenable number.

69663140 is an abundant number, since it is smaller than the sum of its proper divisors (77380372).

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

69663140 is a wasteful number, since it uses less digits than its factorization.

69663140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17887 (or 17885 counting only the distinct ones).

The product of its (nonzero) digits is 23328, while the sum is 35.

The square root of 69663140 is about 8346.4447521085. Note that the first 3 decimals coincide. The cubic root of 69663140 is about 411.4663732674.

It can be divided in two parts, 696 and 63140, that added together give a palindrome (63836).

The spelling of 69663140 in words is "sixty-nine million, six hundred sixty-three thousand, one hundred forty".