3641787 has 32 divisors (see below), whose sum is σ = 5888000. Its totient is φ = 2216160.

The previous prime is 3641783. The next prime is 3641801. The reversal of 3641787 is 7871463.

3641787 is a `hidden beast` number, since 3 + 641 + 7 + 8 + 7 = 666.

It is not a de Polignac number, because 3641787 - 2² = 3641783 is a prime.

It is a super-2 number, since 2×3641787² = 26525225106738, which contains 22 as substring.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is an Ulam number.

It is a Duffinian number.

Its product of digits (28224) is a multiple of the sum of its prime factors (288).

3641787 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3641783) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 15789 + ... + 16017.

It is an arithmetic number, because the mean of its divisors is an integer number (184000).

Almost surely, 2^3641787 is an apocalyptic number.

3641787 is a deficient number, since it is larger than the sum of its proper divisors (2246213).

3641787 is a wasteful number, since it uses less digits than its factorization.

3641787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 288 (or 282 counting only the distinct ones).

The product of its digits is 28224, while the sum is 36.

The square root of 3641787 is about 1908.3466666201. The cubic root of 3641787 is about 153.8526025438.

The spelling of 3641787 in words is "three million, six hundred forty-one thousand, seven hundred eighty-seven".