696667968 has 168 divisors, whose sum is σ = 2078133512. Its totient is φ = 222953472.

The previous prime is 696667967. The next prime is 696668017. The reversal of 696667968 is 869766696.

It can be written as a sum of positive squares in 4 ways, for example, as 145733184 + 550934784 = 12072^2 + 23472^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696667963) 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, 2067096 + ... + 2067432.

Almost surely, 2^696667968 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 696667968, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1039066756).

696667968 is an abundant number, since it is smaller than the sum of its proper divisors (1381465544).

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

696667968 is a wasteful number, since it uses less digits than its factorization.

696667968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489 (or 476 counting only the distinct ones).

The product of its digits is 35271936, while the sum is 63.

The square root of 696667968 is about 26394.4685114135. The cubic root of 696667968 is about 886.4929392486.

The spelling of 696667968 in words is "six hundred ninety-six million, six hundred sixty-seven thousand, nine hundred sixty-eight".