696209641 has 4 divisors (see below), whose sum is σ = 720216900. Its totient is φ = 672202384.

The previous prime is 696209639. The next prime is 696209669. The reversal of 696209641 is 146902696.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 304328025 + 391881616 = 17445^2 + 19796^2 .

It is a cyclic number.

It is not a de Polignac number, because 696209641 - 2¹ = 696209639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (696209621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12003586 + ... + 12003643.

It is an arithmetic number, because the mean of its divisors is an integer number (180054225).

Almost surely, 2^696209641 is an apocalyptic number.

It is an amenable number.

696209641 is a deficient number, since it is larger than the sum of its proper divisors (24007259).

696209641 is a wasteful number, since it uses less digits than its factorization.

696209641 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24007258.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 696209641 is about 26385.7848281987. The cubic root of 696209641 is about 886.2984933045.

The spelling of 696209641 in words is "six hundred ninety-six million, two hundred nine thousand, six hundred forty-one".