63501966 has 48 divisors (see below), whose sum is σ = 151255728. Its totient is φ = 19094400.

The previous prime is 63501943. The next prime is 63501979. The reversal of 63501966 is 66910536.

63501966 is a `hidden beast` number, since 63 + 501 + 96 + 6 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 63501966.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 25956 + ... + 28296.

It is an arithmetic number, because the mean of its divisors is an integer number (3151161).

Almost surely, 2^63501966 is an apocalyptic number.

63501966 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 63501966, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (75627864).

63501966 is an abundant number, since it is smaller than the sum of its proper divisors (87753762).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

63501966 is a wasteful number, since it uses less digits than its factorization.

63501966 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2497 (or 2494 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 36.

The square root of 63501966 is about 7968.8120821111. The cubic root of 63501966 is about 398.9597260875.

The spelling of 63501966 in words is "sixty-three million, five hundred one thousand, nine hundred sixty-six".