3657061 has 4 divisors (see below), whose sum is σ = 3711712. Its totient is φ = 3602412.

The previous prime is 3657041. The next prime is 3657079. The reversal of 3657061 is 1607563.

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.

It is a cyclic number.

It is not a de Polignac number, because 3657061 - 2⁵ = 3657029 is a prime.

It is an Ulam number.

It is a Duffinian number.

3657061 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3657041) 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, 27225 + ... + 27358.

It is an arithmetic number, because the mean of its divisors is an integer number (927928).

Almost surely, 2^3657061 is an apocalyptic number.

It is an amenable number.

3657061 is a deficient number, since it is larger than the sum of its proper divisors (54651).

3657061 is an equidigital number, since it uses as much as digits as its factorization.

3657061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54650.

The product of its (nonzero) digits is 3780, while the sum is 28.

The square root of 3657061 is about 1912.3443727530. The cubic root of 3657061 is about 154.0673933400.

The spelling of 3657061 in words is "three million, six hundred fifty-seven thousand, sixty-one".