3641261 has 4 divisors (see below), whose sum is σ = 3921372. Its totient is φ = 3361152.

The previous prime is 3641243. The next prime is 3641263. The reversal of 3641261 is 1621463.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1621463 = 1009 ⋅1607.

It can be written as a sum of positive squares in 2 ways, for example, as 2418025 + 1223236 = 1555^2 + 1106^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3641261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3641263) 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, 140036 + ... + 140061.

It is an arithmetic number, because the mean of its divisors is an integer number (980343).

Almost surely, 2^3641261 is an apocalyptic number.

It is an amenable number.

3641261 is a deficient number, since it is larger than the sum of its proper divisors (280111).

3641261 is a wasteful number, since it uses less digits than its factorization.

3641261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 280110.

The product of its digits is 864, while the sum is 23.

The square root of 3641261 is about 1908.2088460124. The cubic root of 3641261 is about 153.8451949748.

The spelling of 3641261 in words is "three million, six hundred forty-one thousand, two hundred sixty-one".