694140588801 has 27 divisors (see below), whose sum is σ = 1102127288353. Its totient is φ = 420674602920.

The previous prime is 694140588733. The next prime is 694140588809. The reversal of 694140588801 is 108885041496.

It is a happy number.

The square root of 694140588801 is 833151.

It is a perfect power (a square), and thus also a powerful number.

It is not a de Polignac number, because 694140588801 - 2²¹ = 694138491649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (694140588809) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 27481360 + ... + 27506606.

Almost surely, 2^694140588801 is an apocalyptic number.

694140588801 is the 833151-st square number.

694140588801 is the 416576-th centered octagonal number.

It is an amenable number.

694140588801 is a deficient number, since it is larger than the sum of its proper divisors (407986699552).

694140588801 is an frugal number, since it uses more digits than its factorization.

694140588801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50522 (or 25261 counting only the distinct ones).

The product of its (nonzero) digits is 2211840, while the sum is 54.

The spelling of 694140588801 in words is "six hundred ninety-four billion, one hundred forty million, five hundred eighty-eight thousand, eight hundred one".