3651537 has 4 divisors (see below), whose sum is σ = 4868720. Its totient is φ = 2434356.

The previous prime is 3651497. The next prime is 3651539. The reversal of 3651537 is 7351563.

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 not a de Polignac number, because 3651537 - 2⁷ = 3651409 is a prime.

It is a D-number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3651539) 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, 608587 + ... + 608592.

It is an arithmetic number, because the mean of its divisors is an integer number (1217180).

Almost surely, 2^3651537 is an apocalyptic number.

It is an amenable number.

3651537 is a deficient number, since it is larger than the sum of its proper divisors (1217183).

3651537 is a wasteful number, since it uses less digits than its factorization.

3651537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1217182.

The product of its digits is 9450, while the sum is 30.

The square root of 3651537 is about 1910.8995264011. The cubic root of 3651537 is about 153.9897811851.

The spelling of 3651537 in words is "three million, six hundred fifty-one thousand, five hundred thirty-seven".