63297720 has 256 divisors, whose sum is σ = 228096000. Its totient is φ = 15579648.

The previous prime is 63297701. The next prime is 63297743. The reversal of 63297720 is 2779236.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1346737 + ... + 1346783.

It is an arithmetic number, because the mean of its divisors is an integer number (891000).

Almost surely, 2^63297720 is an apocalyptic number.

63297720 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63297720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (114048000).

63297720 is an abundant number, since it is smaller than the sum of its proper divisors (164798280).

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

63297720 is a wasteful number, since it uses less digits than its factorization.

63297720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 63297720 is about 7955.9864253278. The cubic root of 63297720 is about 398.5315322701.

The spelling of 63297720 in words is "sixty-three million, two hundred ninety-seven thousand, seven hundred twenty".