63421290 has 24 divisors (see below), whose sum is σ = 164895588. Its totient is φ = 16912320.

The previous prime is 63421243. The next prime is 63421307. The reversal of 63421290 is 9212436.

63421290 is a `hidden beast` number, since 634 + 2 + 1 + 29 + 0 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 56115081 + 7306209 = 7491^2 + 2703^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 352251 + ... + 352430.

Almost surely, 2^63421290 is an apocalyptic number.

63421290 is an abundant number, since it is smaller than the sum of its proper divisors (101474298).

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

63421290 is a wasteful number, since it uses less digits than its factorization.

63421290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704694 (or 704691 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 63421290 is about 7963.7484892480. The cubic root of 63421290 is about 398.7907018459.

The spelling of 63421290 in words is "sixty-three million, four hundred twenty-one thousand, two hundred ninety".