3652576021 has 4 divisors (see below), whose sum is σ = 3867433452. Its totient is φ = 3437718592.

The previous prime is 3652575989. The next prime is 3652576033. The reversal of 3652576021 is 1206752563.

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 1414812996 + 2237763025 = 37614^2 + 47305^2 .

It is a cyclic number.

It is not a de Polignac number, because 3652576021 - 2⁵ = 3652575989 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 (3652576091) 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, 107428690 + ... + 107428723.

It is an arithmetic number, because the mean of its divisors is an integer number (966858363).

Almost surely, 2^3652576021 is an apocalyptic number.

It is an amenable number.

3652576021 is a deficient number, since it is larger than the sum of its proper divisors (214857431).

3652576021 is a wasteful number, since it uses less digits than its factorization.

3652576021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214857430.

The product of its (nonzero) digits is 75600, while the sum is 37.

The square root of 3652576021 is about 60436.5454092141. The cubic root of 3652576021 is about 1540.0438539544.

The spelling of 3652576021 in words is "three billion, six hundred fifty-two million, five hundred seventy-six thousand, twenty-one".