3685714621 has 4 divisors (see below), whose sum is σ = 3704236000. Its totient is φ = 3667193244.

The previous prime is 3685714609. The next prime is 3685714679. The reversal of 3685714621 is 1264175863.

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: 1264175863 = 241 ⋅5245543.

It is a cyclic number.

It is not a de Polignac number, because 3685714621 - 2⁷ = 3685714493 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 (3605714621) 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, 9260391 + ... + 9260788.

It is an arithmetic number, because the mean of its divisors is an integer number (926059000).

Almost surely, 2^3685714621 is an apocalyptic number.

It is an amenable number.

3685714621 is a deficient number, since it is larger than the sum of its proper divisors (18521379).

3685714621 is a wasteful number, since it uses less digits than its factorization.

3685714621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18521378.

The product of its digits is 241920, while the sum is 43.

The square root of 3685714621 is about 60710.0866495840. The cubic root of 3685714621 is about 1544.6872735920.

The spelling of 3685714621 in words is "three billion, six hundred eighty-five million, seven hundred fourteen thousand, six hundred twenty-one".