899070697728 has 864 divisors, whose sum is σ = 3166855211520. Its totient is φ = 239798845440.

The previous prime is 899070697703. The next prime is 899070697747. The reversal of 899070697728 is 827796070998.

It is a super-2 number, since 2×899070697728² (a number of 25 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is an unprimeable number.

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 95 ways as a sum of consecutive naturals, for example, 3730583688 + ... + 3730583928.

It is an arithmetic number, because the mean of its divisors is an integer number (3665341680).

Almost surely, 2^899070697728 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 899070697728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1583427605760).

899070697728 is an abundant number, since it is smaller than the sum of its proper divisors (2267784513792).

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

899070697728 is a wasteful number, since it uses less digits than its factorization.

899070697728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495 (or 478 counting only the distinct ones).

The product of its (nonzero) digits is 192036096, while the sum is 72.

The spelling of 899070697728 in words is "eight hundred ninety-nine billion, seventy million, six hundred ninety-seven thousand, seven hundred twenty-eight".