699648795781936 has 320 divisors, whose sum is σ = 1828151150837760. Its totient is φ = 250506419143680.

The previous prime is 699648795781933. The next prime is 699648795781967. The reversal of 699648795781936 is 639187597846996.

It is a happy number.

It is a super-2 number, since 2×699648795781936² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (699648795781933) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 3489994375 + ... + 3490194841.

It is an arithmetic number, because the mean of its divisors is an integer number (5712972346368).

Almost surely, 2^{699648795781936} 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 699648795781936, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (914075575418880).

699648795781936 is an abundant number, since it is smaller than the sum of its proper divisors (1128502355055824).

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

699648795781936 is a wasteful number, since it uses less digits than its factorization.

699648795781936 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 201472 (or 201466 counting only the distinct ones).

The product of its digits is 266655836160, while the sum is 97.

The spelling of 699648795781936 in words is "six hundred ninety-nine trillion, six hundred forty-eight billion, seven hundred ninety-five million, seven hundred eighty-one thousand, nine hundred thirty-six".