1963601 has 4 divisors (see below), whose sum is σ = 1981092. Its totient is φ = 1946112.

The previous prime is 1963567. The next prime is 1963639. The reversal of 1963601 is 1063691.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 70225 + 1893376 = 265^2 + 1376^2 .

It is a cyclic number.

It is not a de Polignac number, because 1963601 - 2⁶ = 1963537 is a prime.

It is a super-3 number, since 3×1963601³ = 22713339295910312403, which contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1963691) 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 3 ways as a sum of consecutive naturals, for example, 8576 + ... + 8801.

It is an arithmetic number, because the mean of its divisors is an integer number (495273).

2^1963601 is an apocalyptic number.

It is an amenable number.

1963601 is a deficient number, since it is larger than the sum of its proper divisors (17491).

1963601 is a wasteful number, since it uses less digits than its factorization.

1963601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17490.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 1963601 is about 1401.2854812635. The cubic root of 1963601 is about 125.2230896113.

The spelling of 1963601 in words is "one million, nine hundred sixty-three thousand, six hundred one".