69389136 has 90 divisors (see below), whose sum is σ = 201957002. Its totient is φ = 23094720.

The previous prime is 69389107. The next prime is 69389149. The reversal of 69389136 is 63198396.

It can be written as a sum of positive squares in only one way, i.e., 65610000 + 3779136 = 8100^2 + 1944^2 .

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 69389091 and 69389100.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 104646 + ... + 105306.

Almost surely, 2^69389136 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 69389136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (100978501).

69389136 is an abundant number, since it is smaller than the sum of its proper divisors (132567866).

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

69389136 is an frugal number, since it uses more digits than its factorization.

69389136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693 (or 666 counting only the distinct ones).

The product of its digits is 209952, while the sum is 45.

The square root of 69389136 is about 8330.0141656542. The cubic root of 69389136 is about 410.9261948564.

The spelling of 69389136 in words is "sixty-nine million, three hundred eighty-nine thousand, one hundred thirty-six".