3647420801 has 4 divisors (see below), whose sum is σ = 3648981204. Its totient is φ = 3645860400.

The previous prime is 3647420783. The next prime is 3647420809. The reversal of 3647420801 is 1080247463.

3647420801 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1183291201 + 2464129600 = 34399^2 + 49640^2 .

It is a cyclic number.

It is not a de Polignac number, because 3647420801 - 2¹⁸ = 3647158657 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3647420809) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 776690 + ... + 781371.

It is an arithmetic number, because the mean of its divisors is an integer number (912245301).

Almost surely, 2^3647420801 is an apocalyptic number.

It is an amenable number.

3647420801 is a deficient number, since it is larger than the sum of its proper divisors (1560403).

3647420801 is a wasteful number, since it uses less digits than its factorization.

3647420801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560402.

The product of its (nonzero) digits is 32256, while the sum is 35.

The square root of 3647420801 is about 60393.8804929771. The cubic root of 3647420801 is about 1539.3189771457.

It can be divided in two parts, 36474 and 20801, that added together give a palindrome (57275).

The spelling of 3647420801 in words is "three billion, six hundred forty-seven million, four hundred twenty thousand, eight hundred one".