696387977 has 2 divisors, whose sum is σ = 696387978. Its totient is φ = 696387976.

The previous prime is 696387971. The next prime is 696388003. The reversal of 696387977 is 779783696.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 681418816 + 14969161 = 26104^2 + 3869^2 .

It is a cyclic number.

It is not a de Polignac number, because 696387977 - 2⁴ = 696387961 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (696387971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348193988 + 348193989.

It is an arithmetic number, because the mean of its divisors is an integer number (348193989).

Almost surely, 2^696387977 is an apocalyptic number.

It is an amenable number.

696387977 is a deficient number, since it is larger than the sum of its proper divisors (1).

696387977 is an equidigital number, since it uses as much as digits as its factorization.

696387977 is an evil number, because the sum of its binary digits is even.

The product of its digits is 24004512, while the sum is 62.

The square root of 696387977 is about 26389.1640072208. The cubic root of 696387977 is about 886.3741627701.

The spelling of 696387977 in words is "six hundred ninety-six million, three hundred eighty-seven thousand, nine hundred seventy-seven".