6201855 has 72 divisors (see below), whose sum is σ = 12697776. Its totient is φ = 2787840.

The previous prime is 6201851. The next prime is 6201863. The reversal of 6201855 is 5581026.

6201855 = 227² + 228² + ... + 311².

It is not a de Polignac number, because 6201855 - 2² = 6201851 is a prime.

6201855 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6201851) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 92532 + ... + 92598.

It is an arithmetic number, because the mean of its divisors is an integer number (176358).

Almost surely, 2^6201855 is an apocalyptic number.

6201855 is an abundant number, since it is smaller than the sum of its proper divisors (6495921).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6201855 is a wasteful number, since it uses less digits than its factorization.

6201855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117 (or 103 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 27.

The square root of 6201855 is about 2490.3523847038. The cubic root of 6201855 is about 183.7273746958.

It can be divided in two parts, 6201 and 855, that added together give a square (7056 = 84²).

The spelling of 6201855 in words is "six million, two hundred one thousand, eight hundred fifty-five".