63960646 has 4 divisors (see below), whose sum is σ = 95940972. Its totient is φ = 31980322.

The previous prime is 63960601. The next prime is 63960649. The reversal of 63960646 is 64606936.

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

It is a junction number, because it is equal to n+sod(n) for n = 63960599 and 63960608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63960649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15990160 + ... + 15990163.

It is an arithmetic number, because the mean of its divisors is an integer number (23985243).

Almost surely, 2^63960646 is an apocalyptic number.

63960646 is a deficient number, since it is larger than the sum of its proper divisors (31980326).

63960646 is a wasteful number, since it uses less digits than its factorization.

63960646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31980325.

The product of its (nonzero) digits is 139968, while the sum is 40.

The square root of 63960646 is about 7997.5399967740. The cubic root of 63960646 is about 399.9179956894.

The spelling of 63960646 in words is "sixty-three million, nine hundred sixty thousand, six hundred forty-six".