63961601 has 8 divisors (see below), whose sum is σ = 70287264. Its totient is φ = 57721120.

The previous prime is 63961571. The next prime is 63961603. The reversal of 63961601 is 10616936.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63961601 - 2⁶ = 63961537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (63961603) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19715 + ... + 22728.

It is an arithmetic number, because the mean of its divisors is an integer number (8785908).

Almost surely, 2^63961601 is an apocalyptic number.

It is an amenable number.

63961601 is a deficient number, since it is larger than the sum of its proper divisors (6325663).

63961601 is a wasteful number, since it uses less digits than its factorization.

63961601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42591.

The product of its (nonzero) digits is 5832, while the sum is 32.

The square root of 63961601 is about 7997.5997024107. The cubic root of 63961601 is about 399.9199860788.

It can be divided in two parts, 6396 and 1601, that added together give a palindrome (7997).

The spelling of 63961601 in words is "sixty-three million, nine hundred sixty-one thousand, six hundred one".