63571040 has 72 divisors (see below), whose sum is σ = 162697248. Its totient is φ = 23462400.

The previous prime is 63571037. The next prime is 63571043. The reversal of 63571040 is 4017536.

It is an interprime number because it is at equal distance from previous prime (63571037) and next prime (63571043).

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63571043) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 25865 + ... + 28215.

It is an arithmetic number, because the mean of its divisors is an integer number (2259684).

Almost surely, 2^63571040 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 63571040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (81348624).

63571040 is an abundant number, since it is smaller than the sum of its proper divisors (99126208).

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

63571040 is a wasteful number, since it uses less digits than its factorization.

63571040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2392 (or 2371 counting only the distinct ones).

The product of its (nonzero) digits is 2520, while the sum is 26.

The square root of 63571040 is about 7973.1449253102. The cubic root of 63571040 is about 399.1043292651.

Adding to 63571040 its reverse (4017536), we get a palindrome (67588576).

The spelling of 63571040 in words is "sixty-three million, five hundred seventy-one thousand, forty".