69132816 has 60 divisors (see below), whose sum is σ = 194537772. Its totient is φ = 22917888.

The previous prime is 69132737. The next prime is 69132841. The reversal of 69132816 is 61823196.

It can be written as a sum of positive squares in 2 ways, for example, as 66585600 + 2547216 = 8160^2 + 1596^2 .

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

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27150 + ... + 29586.

Almost surely, 2^69132816 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 69132816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (97268886).

69132816 is an abundant number, since it is smaller than the sum of its proper divisors (125404956).

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

69132816 is a wasteful number, since it uses less digits than its factorization.

69132816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2648 (or 2639 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 69132816 is about 8314.6146032152. The cubic root of 69132816 is about 410.4195902781.

The spelling of 69132816 in words is "sixty-nine million, one hundred thirty-two thousand, eight hundred sixteen".