69144516 has 120 divisors (see below), whose sum is σ = 211682240. Its totient is φ = 19268928.

The previous prime is 69144511. The next prime is 69144547. The reversal of 69144516 is 61544196.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (69144511) 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 39 ways as a sum of consecutive naturals, for example, 97170 + ... + 97878.

Almost surely, 2^69144516 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 69144516, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (105841120).

69144516 is an abundant number, since it is smaller than the sum of its proper divisors (142537724).

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

69144516 is a wasteful number, since it uses less digits than its factorization.

69144516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 775 (or 764 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 69144516 is about 8315.3181538652. The cubic root of 69144516 is about 410.4427420345.

The spelling of 69144516 in words is "sixty-nine million, one hundred forty-four thousand, five hundred sixteen".