3697322821 has 8 divisors (see below), whose sum is σ = 3776947200. Its totient is φ = 3617738448.

The previous prime is 3697322777. The next prime is 3697322861. The reversal of 3697322821 is 1282237963.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3697322821 - 2⁷ = 3697322693 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 (3697322861) 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, 246855 + ... + 261403.

It is an arithmetic number, because the mean of its divisors is an integer number (472118400).

Almost surely, 2^3697322821 is an apocalyptic number.

It is an amenable number.

3697322821 is a deficient number, since it is larger than the sum of its proper divisors (79624379).

3697322821 is a wasteful number, since it uses less digits than its factorization.

3697322821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20003.

The product of its digits is 217728, while the sum is 43.

The square root of 3697322821 is about 60805.6150449940. The cubic root of 3697322821 is about 1546.3072441043.

The spelling of 3697322821 in words is "three billion, six hundred ninety-seven million, three hundred twenty-two thousand, eight hundred twenty-one".