63261620 has 24 divisors (see below), whose sum is σ = 134534400. Its totient is φ = 24983712.

The previous prime is 63261619. The next prime is 63261623. The reversal of 63261620 is 2616236.

It is a self number, because there is not a number n which added to its sum of digits gives 63261620.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63261623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18440 + ... + 21599.

It is an arithmetic number, because the mean of its divisors is an integer number (5605600).

Almost surely, 2^63261620 is an apocalyptic number.

It is an amenable number.

63261620 is an abundant number, since it is smaller than the sum of its proper divisors (71272780).

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

63261620 is a wasteful number, since it uses less digits than its factorization.

63261620 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40127 (or 40125 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 26.

The square root of 63261620 is about 7953.7173698843. The cubic root of 63261620 is about 398.4557542681.

Adding to 63261620 its reverse (2616236), we get a palindrome (65877856).

The spelling of 63261620 in words is "sixty-three million, two hundred sixty-one thousand, six hundred twenty".