3641780 has 12 divisors (see below), whose sum is σ = 7647780. Its totient is φ = 1456704.

The previous prime is 3641777. The next prime is 3641783. The reversal of 3641780 is 871463.

It is an interprime number because it is at equal distance from previous prime (3641777) and next prime (3641783).

It can be written as a sum of positive squares in 2 ways, for example, as 1909924 + 1731856 = 1382^2 + 1316^2 .

It is a congruent 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 3 ways as a sum of consecutive naturals, for example, 91025 + ... + 91064.

It is an arithmetic number, because the mean of its divisors is an integer number (637315).

Almost surely, 2^3641780 is an apocalyptic number.

It is an amenable number.

3641780 is an abundant number, since it is smaller than the sum of its proper divisors (4006000).

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

3641780 is a wasteful number, since it uses less digits than its factorization.

3641780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182098 (or 182096 counting only the distinct ones).

The product of its (nonzero) digits is 4032, while the sum is 29.

The square root of 3641780 is about 1908.3448325709. The cubic root of 3641780 is about 153.8525039687.

The spelling of 3641780 in words is "three million, six hundred forty-one thousand, seven hundred eighty".