69897216 has 88 divisors (see below), whose sum is σ = 189863344. Its totient is φ = 22855680.

The previous prime is 69897209. The next prime is 69897239. The reversal of 69897216 is 61279896.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 187206 + ... + 187578.

It is an arithmetic number, because the mean of its divisors is an integer number (2157538).

Almost surely, 2^69897216 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 69897216, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94931672).

69897216 is an abundant number, since it is smaller than the sum of its proper divisors (119966128).

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

69897216 is a wasteful number, since it uses less digits than its factorization.

69897216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 457 (or 439 counting only the distinct ones).

The product of its digits is 326592, while the sum is 48.

The square root of 69897216 is about 8360.4554899838. The cubic root of 69897216 is about 411.9267158434.

The spelling of 69897216 in words is "sixty-nine million, eight hundred ninety-seven thousand, two hundred sixteen".