69691636 has 48 divisors (see below), whose sum is σ = 151224192. Its totient is φ = 27417600.

The previous prime is 69691603. The next prime is 69691637. The reversal of 69691636 is 63619696.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69691637) 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 15 ways as a sum of consecutive naturals, for example, 17731 + ... + 21301.

It is an arithmetic number, because the mean of its divisors is an integer number (3150504).

Almost surely, 2^69691636 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 69691636, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75612096).

69691636 is an abundant number, since it is smaller than the sum of its proper divisors (81532556).

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

69691636 is a wasteful number, since it uses less digits than its factorization.

69691636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3640 (or 3638 counting only the distinct ones).

The product of its digits is 314928, while the sum is 46.

The square root of 69691636 is about 8348.1516517131. The cubic root of 69691636 is about 411.5224696353.

The spelling of 69691636 in words is "sixty-nine million, six hundred ninety-one thousand, six hundred thirty-six".