69680557 has 2 divisors, whose sum is σ = 69680558. Its totient is φ = 69680556.

The previous prime is 69680551. The next prime is 69680563. The reversal of 69680557 is 75508696.

It is a balanced prime because it is at equal distance from previous prime (69680551) and next prime (69680563).

It can be written as a sum of positive squares in only one way, i.e., 60746436 + 8934121 = 7794^2 + 2989^2 .

It is a cyclic number.

It is not a de Polignac number, because 69680557 - 2²³ = 61291949 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (69680551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34840278 + 34840279.

It is an arithmetic number, because the mean of its divisors is an integer number (34840279).

Almost surely, 2^69680557 is an apocalyptic number.

It is an amenable number.

69680557 is a deficient number, since it is larger than the sum of its proper divisors (1).

69680557 is an equidigital number, since it uses as much as digits as its factorization.

69680557 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 69680557 is about 8347.4880652805. The cubic root of 69680557 is about 411.5006616666.

The spelling of 69680557 in words is "sixty-nine million, six hundred eighty thousand, five hundred fifty-seven".