698864274991872 has 1152 divisors, whose sum is σ = 2471726942899200. Its totient is φ = 192271358361600.

The previous prime is 698864274991859. The next prime is 698864274991877. The reversal of 698864274991872 is 278199472468896.

698864274991872 is a `hidden beast` number, since 6 + 9 + 8 + 8 + 6 + 42 + 7 + 499 + 1 + 8 + 72 = 666.

It is a tau number, because it is divible by the number of its divisors (1152).

It is a super-2 number, since 2×698864274991872² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (698864274991877) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 44268331563 + ... + 44268347349.

It is an arithmetic number, because the mean of its divisors is an integer number (2145596304600).

Almost surely, 2^{698864274991872} 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 698864274991872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1235863471449600).

698864274991872 is an abundant number, since it is smaller than the sum of its proper divisors (1772862667907328).

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

698864274991872 is a wasteful number, since it uses less digits than its factorization.

698864274991872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17050 (or 17030 counting only the distinct ones).

The product of its digits is 42138206208, while the sum is 90.

The spelling of 698864274991872 in words is "six hundred ninety-eight trillion, eight hundred sixty-four billion, two hundred seventy-four million, nine hundred ninety-one thousand, eight hundred seventy-two".