63434826 has 120 divisors (see below), whose sum is σ = 176435424. Its totient is φ = 16679520.

The previous prime is 63434809. The next prime is 63434827. The reversal of 63434826 is 62843436.

It is a happy number.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63434827) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 191481 + ... + 191811.

Almost surely, 2^63434826 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63434826, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (88217712).

63434826 is an abundant number, since it is smaller than the sum of its proper divisors (113000598).

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

63434826 is a wasteful number, since it uses less digits than its factorization.

63434826 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 378 (or 356 counting only the distinct ones).

The product of its digits is 82944, while the sum is 36.

The square root of 63434826 is about 7964.5982949550. The cubic root of 63434826 is about 398.8190711152.

The spelling of 63434826 in words is "sixty-three million, four hundred thirty-four thousand, eight hundred twenty-six".