3634945 has 4 divisors (see below), whose sum is σ = 4361940. Its totient is φ = 2907952.

The previous prime is 3634927. The next prime is 3634949. The reversal of 3634945 is 5494363.

It is a happy number.

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 2666689 + 968256 = 1633^2 + 984^2 .

It is a cyclic number.

It is not a de Polignac number, because 3634945 - 2⁵ = 3634913 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a self number, because there is not a number n which added to its sum of digits gives 3634945.

It is not an unprimeable number, because it can be changed into a prime (3634949) 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, 363490 + ... + 363499.

It is an arithmetic number, because the mean of its divisors is an integer number (1090485).

Almost surely, 2^3634945 is an apocalyptic number.

It is an amenable number.

3634945 is a deficient number, since it is larger than the sum of its proper divisors (726995).

3634945 is an equidigital number, since it uses as much as digits as its factorization.

3634945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 726994.

The product of its digits is 38880, while the sum is 34.

The square root of 3634945 is about 1906.5531726128. The cubic root of 3634945 is about 153.7561920524.

The spelling of 3634945 in words is "three million, six hundred thirty-four thousand, nine hundred forty-five".