696537663 has 16 divisors (see below), whose sum is σ = 979745280. Its totient is φ = 438951744.

The previous prime is 696537661. The next prime is 696537671. The reversal of 696537663 is 366735696.

It is a Cunningham number, because it is equal to 26392²-1.

It is not a de Polignac number, because 696537663 - 2¹ = 696537661 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696537661) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13195 + ... + 39587.

It is an arithmetic number, because the mean of its divisors is an integer number (61234080).

Almost surely, 2^696537663 is an apocalyptic number.

696537663 is a deficient number, since it is larger than the sum of its proper divisors (283207617).

696537663 is a wasteful number, since it uses less digits than its factorization.

696537663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26878.

The product of its digits is 3674160, while the sum is 51.

The square root of 696537663 is about 26391.9999810549. Note that the first 4 decimals coincide. The cubic root of 696537663 is about 886.4376658279.

The spelling of 696537663 in words is "six hundred ninety-six million, five hundred thirty-seven thousand, six hundred sixty-three".