3620655 has 24 divisors (see below), whose sum is σ = 6383520. Its totient is φ = 1897920.

The previous prime is 3620641. The next prime is 3620657. The reversal of 3620655 is 5560263.

3620655 is a `hidden beast` number, since 3 + 6 + 2 + 0 + 655 = 666.

It is not a de Polignac number, because 3620655 - 2⁵ = 3620623 is a prime.

It is a plaindrome in base 13.

It is a zygodrome in base 13.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3620657) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2086 + ... + 3404.

It is an arithmetic number, because the mean of its divisors is an integer number (265980).

Almost surely, 2^3620655 is an apocalyptic number.

3620655 is a deficient number, since it is larger than the sum of its proper divisors (2762865).

3620655 is a wasteful number, since it uses less digits than its factorization.

3620655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1391 (or 1388 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 27.

The square root of 3620655 is about 1902.8018814370. The cubic root of 3620655 is about 153.5544410373.

The spelling of 3620655 in words is "three million, six hundred twenty thousand, six hundred fifty-five".