696078881 has 2 divisors, whose sum is σ = 696078882. Its totient is φ = 696078880.

The previous prime is 696078857. The next prime is 696078931. The reversal of 696078881 is 188870696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 537822481 + 158256400 = 23191^2 + 12580^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-696078881 is a prime.

It is a super-2 number, since 2×696078881² = 969051617148424322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (696078781) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348039440 + 348039441.

It is an arithmetic number, because the mean of its divisors is an integer number (348039441).

Almost surely, 2^696078881 is an apocalyptic number.

It is an amenable number.

696078881 is a deficient number, since it is larger than the sum of its proper divisors (1).

696078881 is an equidigital number, since it uses as much as digits as its factorization.

696078881 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 696078881 is about 26383.3068624841. The cubic root of 696078881 is about 886.2430025249.

The spelling of 696078881 in words is "six hundred ninety-six million, seventy-eight thousand, eight hundred eighty-one".