3620813 has 8 divisors (see below), whose sum is σ = 4381632. Its totient is φ = 2920896.

The previous prime is 3620803. The next prime is 3620819. The reversal of 3620813 is 3180263.

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 3620813 - 2¹⁸ = 3358669 is a prime.

It is a super-2 number, since 2×3620813² = 26220573561938, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620819) 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, 15095 + ... + 15332.

It is an arithmetic number, because the mean of its divisors is an integer number (547704).

Almost surely, 2^3620813 is an apocalyptic number.

It is an amenable number.

3620813 is a deficient number, since it is larger than the sum of its proper divisors (760819).

3620813 is a wasteful number, since it uses less digits than its factorization.

3620813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30451.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 3620813 is about 1902.8433987063. The cubic root of 3620813 is about 153.5566746340.

The spelling of 3620813 in words is "three million, six hundred twenty thousand, eight hundred thirteen".