3630961 has 2 divisors, whose sum is σ = 3630962. Its totient is φ = 3630960.

The previous prime is 3630959. The next prime is 3630967. The reversal of 3630961 is 1690363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3629025 + 1936 = 1905^2 + 44^2 .

It is a cyclic number.

It is not a de Polignac number, because 3630961 - 2¹ = 3630959 is a prime.

Together with 3630959, it forms a pair of twin primes.

It is an alternating number because its digits alternate between odd and even.

It is not a weakly prime, because it can be changed into another prime (3630967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1815480 + 1815481.

It is an arithmetic number, because the mean of its divisors is an integer number (1815481).

Almost surely, 2^3630961 is an apocalyptic number.

It is an amenable number.

3630961 is a deficient number, since it is larger than the sum of its proper divisors (1).

3630961 is an equidigital number, since it uses as much as digits as its factorization.

3630961 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 3630961 is about 1905.5080687313. The cubic root of 3630961 is about 153.6999978412.

The spelling of 3630961 in words is "three million, six hundred thirty thousand, nine hundred sixty-one".