63774720 has 168 divisors, whose sum is σ = 222350076. Its totient is φ = 16908288.

The previous prime is 63774713. The next prime is 63774731. The reversal of 63774720 is 2747736.

It can be written as a sum of positive squares in 2 ways, for example, as 61968384 + 1806336 = 7872^2 + 1344^2 .

It is a super-2 number, since 2×63774720² = 8134429822156800, which contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 368554 + ... + 368726.

Almost surely, 2^63774720 is an apocalyptic number.

63774720 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 63774720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (111175038).

63774720 is an abundant number, since it is smaller than the sum of its proper divisors (158575356).

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

63774720 is a wasteful number, since it uses less digits than its factorization.

63774720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210 (or 183 counting only the distinct ones).

The product of its (nonzero) digits is 49392, while the sum is 36.

The square root of 63774720 is about 7985.9075877448. The cubic root of 63774720 is about 399.5301149028.

It can be divided in two parts, 637 and 74720, that added together give a palindrome (75357).

The spelling of 63774720 in words is "sixty-three million, seven hundred seventy-four thousand, seven hundred twenty".