69898899456 has 429 divisors, whose sum is σ = 222728943001. Its totient is φ = 21929066496.

The previous prime is 69898899437. The next prime is 69898899481. The reversal of 69898899456 is 65499889896.

The square root of 69898899456 is 264384.

It is a perfect power (a square), and thus also a powerful number.

69898899456 is a `hidden beast` number, since 6 + 9 + 89 + 8 + 89 + 9 + 456 = 666.

It can be written as a sum of positive squares in only one way, i.e., 54419558400 + 15479341056 = 233280^2 + 124416^2 .

It is a super-2 number, since 2×69898899456² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 32 ways as a sum of consecutive naturals, for example, 4111699960 + ... + 4111699976.

Almost surely, 2^69898899456 is an apocalyptic number.

69898899456 is the 264384-th square number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 69898899456

69898899456 is an abundant number, since it is smaller than the sum of its proper divisors (152830043545).

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

69898899456 is an frugal number, since it uses more digits than its factorization.

69898899456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88 (or 22 counting only the distinct ones).

The product of its digits is 2418647040, while the sum is 81.

Multiplying 69898899456 by its sum of digits (81), we get a square (5661810855936 = 2379456²).

69898899456 divided by its sum of digits (81) gives a square (862949376 = 29376²).

The spelling of 69898899456 in words is "sixty-nine billion, eight hundred ninety-eight million, eight hundred ninety-nine thousand, four hundred fifty-six".