696788521 has 12 divisors (see below), whose sum is σ = 823104720. Its totient is φ = 584716080.

The previous prime is 696788461. The next prime is 696788549. The reversal of 696788521 is 125887696.

It is not a de Polignac number, because 696788521 - 2¹⁷ = 696657449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (696788321) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 185551 + ... + 189268.

It is an arithmetic number, because the mean of its divisors is an integer number (68592060).

Almost surely, 2^696788521 is an apocalyptic number.

It is an amenable number.

696788521 is a deficient number, since it is larger than the sum of its proper divisors (126316199).

696788521 is a wasteful number, since it uses less digits than its factorization.

696788521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 374856 (or 374843 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 52.

The square root of 696788521 is about 26396.7520918768. The cubic root of 696788521 is about 886.5440698802.

The spelling of 696788521 in words is "six hundred ninety-six million, seven hundred eighty-eight thousand, five hundred twenty-one".