63221040 has 80 divisors (see below), whose sum is σ = 217768800. Its totient is φ = 16858368.

The previous prime is 63221033. The next prime is 63221047. The reversal of 63221040 is 4012236.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (63221033) and next prime (63221047).

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (63221047) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12475 + ... + 16794.

It is an arithmetic number, because the mean of its divisors is an integer number (2722110).

Almost surely, 2^63221040 is an apocalyptic number.

63221040 is a gapful number since it is divisible by the number (60) formed by its first and last digit.

It is an amenable number.

63221040 is an abundant number, since it is smaller than the sum of its proper divisors (154547760).

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

63221040 is a wasteful number, since it uses less digits than its factorization.

63221040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29291 (or 29279 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 18.

The square root of 63221040 is about 7951.1659522362. The cubic root of 63221040 is about 398.3705378126.

Adding to 63221040 its reverse (4012236), we get a palindrome (67233276).

It can be divided in two parts, 632210 and 40, that added together give a triangular number (632250 = T₁₁₂₄).

The spelling of 63221040 in words is "sixty-three million, two hundred twenty-one thousand, forty".