3645771 has 8 divisors (see below), whose sum is σ = 4922880. Its totient is φ = 2399592.

The previous prime is 3645767. The next prime is 3645773. The reversal of 3645771 is 1775463.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 3645771 - 2² = 3645767 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3645773) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7455 + ... + 7928.

It is an arithmetic number, because the mean of its divisors is an integer number (615360).

Almost surely, 2^3645771 is an apocalyptic number.

3645771 is a deficient number, since it is larger than the sum of its proper divisors (1277109).

3645771 is a wasteful number, since it uses less digits than its factorization.

3645771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15465.

The product of its digits is 17640, while the sum is 33.

The square root of 3645771 is about 1909.3902167970. The cubic root of 3645771 is about 153.9086853944.

The spelling of 3645771 in words is "three million, six hundred forty-five thousand, seven hundred seventy-one".