69321616 has 80 divisors (see below), whose sum is σ = 168989184. Its totient is φ = 26813952.

The previous prime is 69321607. The next prime is 69321641. The reversal of 69321616 is 61612396.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67926 + ... + 68938.

Almost surely, 2^69321616 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 69321616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84494592).

69321616 is an abundant number, since it is smaller than the sum of its proper divisors (99667568).

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

69321616 is a wasteful number, since it uses less digits than its factorization.

69321616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1088 (or 1082 counting only the distinct ones).

The product of its digits is 11664, while the sum is 34.

The square root of 69321616 is about 8325.9603650270. The cubic root of 69321616 is about 410.7928659109.

The spelling of 69321616 in words is "sixty-nine million, three hundred twenty-one thousand, six hundred sixteen".