696217651 has 2 divisors, whose sum is σ = 696217652. Its totient is φ = 696217650.

The previous prime is 696217637. The next prime is 696217727. The reversal of 696217651 is 156712696.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 696217651 - 2¹⁵ = 696184883 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 696217598 and 696217607.

It is not a weakly prime, because it can be changed into another prime (696212651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 348108825 + 348108826.

It is an arithmetic number, because the mean of its divisors is an integer number (348108826).

Almost surely, 2^696217651 is an apocalyptic number.

696217651 is a deficient number, since it is larger than the sum of its proper divisors (1).

696217651 is an equidigital number, since it uses as much as digits as its factorization.

696217651 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 43.

The square root of 696217651 is about 26385.9366140374. The cubic root of 696217651 is about 886.3018922921.

The spelling of 696217651 in words is "six hundred ninety-six million, two hundred seventeen thousand, six hundred fifty-one".