699778716 has 192 divisors, whose sum is σ = 2084963328. Its totient is φ = 177795072.

The previous prime is 699778699. The next prime is 699778771. The reversal of 699778716 is 617877996.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 699778716.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 6192676 + ... + 6192788.

It is an arithmetic number, because the mean of its divisors is an integer number (10859184).

Almost surely, 2^699778716 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 699778716, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1042481664).

699778716 is an abundant number, since it is smaller than the sum of its proper divisors (1385184612).

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

699778716 is a wasteful number, since it uses less digits than its factorization.

699778716 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300 (or 298 counting only the distinct ones).

The product of its digits is 8001504, while the sum is 60.

The square root of 699778716 is about 26453.3309055778. The cubic root of 699778716 is about 887.8104304776.

The spelling of 699778716 in words is "six hundred ninety-nine million, seven hundred seventy-eight thousand, seven hundred sixteen".