699668970 has 256 divisors, whose sum is σ = 2354946048. Its totient is φ = 128240640.

The previous prime is 699668969. The next prime is 699668989. The reversal of 699668970 is 79866996.

699668970 = 85² + 86² + ... + 1280².

It is a happy number.

699668970 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 690184 + ... + 691196.

It is an arithmetic number, because the mean of its divisors is an integer number (9199008).

Almost surely, 2^699668970 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 699668970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1177473024).

699668970 is an abundant number, since it is smaller than the sum of its proper divisors (1655277078).

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

699668970 is a wasteful number, since it uses less digits than its factorization.

699668970 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1077.

The product of its (nonzero) digits is 8817984, while the sum is 60.

The square root of 699668970 is about 26451.2564918947. The cubic root of 699668970 is about 887.7640164065.

The spelling of 699668970 in words is "six hundred ninety-nine million, six hundred sixty-eight thousand, nine hundred seventy".