696147561 has 8 divisors (see below), whose sum is σ = 1031329760. Its totient is φ = 464098356.

The previous prime is 696147559. The next prime is 696147589. The reversal of 696147561 is 165741696.

696147561 is a `hidden beast` number, since 69 + 61 + 475 + 61 = 666.

It is not a de Polignac number, because 696147561 - 2¹ = 696147559 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (696147761) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12891595 + ... + 12891648.

It is an arithmetic number, because the mean of its divisors is an integer number (128916220).

Almost surely, 2^696147561 is an apocalyptic number.

It is an amenable number.

696147561 is a deficient number, since it is larger than the sum of its proper divisors (335182199).

696147561 is a wasteful number, since it uses less digits than its factorization.

696147561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25783252 (or 25783246 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 696147561 is about 26384.6084109657. The cubic root of 696147561 is about 886.2721492061.

The spelling of 696147561 in words is "six hundred ninety-six million, one hundred forty-seven thousand, five hundred sixty-one".