63662620 has 96 divisors (see below), whose sum is σ = 168956928. Its totient is φ = 19633152.

The previous prime is 63662609. The next prime is 63662629. The reversal of 63662620 is 2626636.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63662629) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 54159 + ... + 55321.

It is an arithmetic number, because the mean of its divisors is an integer number (1759968).

Almost surely, 2^63662620 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63662620, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84478464).

63662620 is an abundant number, since it is smaller than the sum of its proper divisors (105294308).

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

63662620 is a wasteful number, since it uses less digits than its factorization.

63662620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1219 (or 1217 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 31.

The square root of 63662620 is about 7978.8858871399. The cubic root of 63662620 is about 399.2958862870.

The spelling of 63662620 in words is "sixty-three million, six hundred sixty-two thousand, six hundred twenty".