696196621 has 4 divisors (see below), whose sum is σ = 699730812. Its totient is φ = 692662432.

The previous prime is 696196619. The next prime is 696196639. The reversal of 696196621 is 126691696.

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 437437225 + 258759396 = 20915^2 + 16086^2 .

It is a cyclic number.

It is not a de Polignac number, because 696196621 - 2¹ = 696196619 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (696196661) 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, 1766800 + ... + 1767193.

It is an arithmetic number, because the mean of its divisors is an integer number (174932703).

Almost surely, 2^696196621 is an apocalyptic number.

It is an amenable number.

696196621 is a deficient number, since it is larger than the sum of its proper divisors (3534191).

696196621 is a wasteful number, since it uses less digits than its factorization.

696196621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3534190.

The product of its digits is 209952, while the sum is 46.

The square root of 696196621 is about 26385.5381032868. The cubic root of 696196621 is about 886.2929683028.

The spelling of 696196621 in words is "six hundred ninety-six million, one hundred ninety-six thousand, six hundred twenty-one".