3645807 has 8 divisors (see below), whose sum is σ = 5303040. Its totient is φ = 2209560.

The previous prime is 3645791. The next prime is 3645809. The reversal of 3645807 is 7085463.

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

It is not a de Polignac number, because 3645807 - 2⁴ = 3645791 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33), and also a Moran number because the ratio is a prime number: 110479 = 3645807 / (3 + 6 + 4 + 5 + 8 + 0 + 7).

It is a d-powerful number, because it can be written as 3⁸ + 6⁸ + 4⁶ + 5⁹ + 8 + 0 + 7⁴ .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3645809) 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, 55207 + ... + 55272.

It is an arithmetic number, because the mean of its divisors is an integer number (662880).

Almost surely, 2^3645807 is an apocalyptic number.

3645807 is a deficient number, since it is larger than the sum of its proper divisors (1657233).

3645807 is a wasteful number, since it uses less digits than its factorization.

3645807 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110493.

The product of its (nonzero) digits is 20160, while the sum is 33.

The square root of 3645807 is about 1909.3996438672. The cubic root of 3645807 is about 153.9091919808.

The spelling of 3645807 in words is "three million, six hundred forty-five thousand, eight hundred seven".