3651156 has 60 divisors (see below), whose sum is σ = 9757440. Its totient is φ = 1190160.

The previous prime is 3651133. The next prime is 3651157. The reversal of 3651156 is 6511563.

It is a happy number.

3651156 is a `hidden beast` number, since 3 + 651 + 1 + 5 + 6 = 666.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3651157) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 19021 + ... + 19211.

It is an arithmetic number, because the mean of its divisors is an integer number (162624).

Almost surely, 2^3651156 is an apocalyptic number.

3651156 is a gapful number since it is divisible by the number (36) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 3651156, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (4878720).

3651156 is an abundant number, since it is smaller than the sum of its proper divisors (6106284).

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

3651156 is a wasteful number, since it uses less digits than its factorization.

3651156 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266 (or 255 counting only the distinct ones).

The product of its digits is 2700, while the sum is 27.

The square root of 3651156 is about 1910.7998325309. The cubic root of 3651156 is about 153.9844252535.

It can be divided in two parts, 365 and 1156, that added together give a square (1521 = 39²).

The spelling of 3651156 in words is "three million, six hundred fifty-one thousand, one hundred fifty-six".