699669211880 has 96 divisors (see below), whose sum is σ = 1604740024440. Its totient is φ = 274477271040.

The previous prime is 699669211877. The next prime is 699669211883. The reversal of 699669211880 is 88112966996.

699669211880 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (699669211877) and next prime (699669211883).

It can be written as a sum of positive squares in 12 ways, for example, as 337219458436 + 362449753444 = 580706^2 + 602038^2 .

It is not an unprimeable number, because it can be changed into a prime (699669211883) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 509590874 + ... + 509592246.

Almost surely, 2^699669211880 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 699669211880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (802370012220).

699669211880 is an abundant number, since it is smaller than the sum of its proper divisors (905070812560).

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

699669211880 is a wasteful number, since it uses less digits than its factorization.

699669211880 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2359 (or 1898 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 65.

The spelling of 699669211880 in words is "six hundred ninety-nine billion, six hundred sixty-nine million, two hundred eleven thousand, eight hundred eighty".