3620845 has 8 divisors (see below), whose sum is σ = 4356864. Its totient is φ = 2888784.

The previous prime is 3620843. The next prime is 3620879. The reversal of 3620845 is 5480263.

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

It is a cyclic number.

It is not a de Polignac number, because 3620845 - 2¹ = 3620843 is a prime.

It is a super-2 number, since 2×3620845² = 26221037028050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620843) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1692 + ... + 3178.

It is an arithmetic number, because the mean of its divisors is an integer number (544608).

Almost surely, 2^3620845 is an apocalyptic number.

It is an amenable number.

3620845 is a deficient number, since it is larger than the sum of its proper divisors (736019).

3620845 is a wasteful number, since it uses less digits than its factorization.

3620845 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979.

The product of its (nonzero) digits is 5760, while the sum is 28.

The square root of 3620845 is about 1902.8518071568. The cubic root of 3620845 is about 153.5571270001.

It can be divided in two parts, 3620 and 845, that added together give a triangular number (4465 = T₉₄).

The spelling of 3620845 in words is "three million, six hundred twenty thousand, eight hundred forty-five".