63526420 has 36 divisors (see below), whose sum is σ = 135257724. Its totient is φ = 25062400.

The previous prime is 63526387. The next prime is 63526429. The reversal of 63526420 is 2462536.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 228484 + 63297936 = 478^2 + 7956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63526429) 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, 158220 + ... + 158620.

It is an arithmetic number, because the mean of its divisors is an integer number (3757159).

Almost surely, 2^63526420 is an apocalyptic number.

It is an amenable number.

63526420 is an abundant number, since it is smaller than the sum of its proper divisors (71731304).

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

63526420 is a wasteful number, since it uses less digits than its factorization.

63526420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 588 (or 497 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 28.

The square root of 63526420 is about 7970.3462910968. The cubic root of 63526420 is about 399.0109313739.

Adding to 63526420 its reverse (2462536), we get a palindrome (65988956).

The spelling of 63526420 in words is "sixty-three million, five hundred twenty-six thousand, four hundred twenty".