3634674621 has 4 divisors (see below), whose sum is σ = 4846232832. Its totient is φ = 2423116412.

The previous prime is 3634674619. The next prime is 3634674677. The reversal of 3634674621 is 1264764363.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 1264764363 = 3 ⋅421588121.

It is a cyclic number.

It is not a de Polignac number, because 3634674621 - 2¹ = 3634674619 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3634674821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605779101 + ... + 605779106.

It is an arithmetic number, because the mean of its divisors is an integer number (1211558208).

Almost surely, 2^3634674621 is an apocalyptic number.

It is an amenable number.

3634674621 is a deficient number, since it is larger than the sum of its proper divisors (1211558211).

3634674621 is a wasteful number, since it uses less digits than its factorization.

3634674621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1211558210.

The product of its digits is 435456, while the sum is 42.

The square root of 3634674621 is about 60288.2627134005. The cubic root of 3634674621 is about 1537.5237966308.

The spelling of 3634674621 in words is "three billion, six hundred thirty-four million, six hundred seventy-four thousand, six hundred twenty-one".