3620869 has 4 divisors (see below), whose sum is σ = 4138144. Its totient is φ = 3103596.

The previous prime is 3620843. The next prime is 3620879. The reversal of 3620869 is 9680263.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 3620869 - 2⁷ = 3620741 is a prime.

It is a super-2 number, since 2×3620869² = 26221384630322, 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 (3620819) 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, 258627 + ... + 258640.

It is an arithmetic number, because the mean of its divisors is an integer number (1034536).

Almost surely, 2^3620869 is an apocalyptic number.

It is an amenable number.

3620869 is a deficient number, since it is larger than the sum of its proper divisors (517275).

3620869 is an equidigital number, since it uses as much as digits as its factorization.

3620869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 517274.

The product of its (nonzero) digits is 15552, while the sum is 34.

The square root of 3620869 is about 1902.8581134704. The cubic root of 3620869 is about 153.5574662729.

It can be divided in two parts, 3620 and 869, that added together give a square (4489 = 67²).

The spelling of 3620869 in words is "three million, six hundred twenty thousand, eight hundred sixty-nine".