63791420 has 96 divisors (see below), whose sum is σ = 174375936. Its totient is φ = 19008000.

The previous prime is 63791407. The next prime is 63791471. The reversal of 63791420 is 2419736.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 34520 + ... + 36320.

It is an arithmetic number, because the mean of its divisors is an integer number (1816416).

Almost surely, 2^63791420 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63791420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (87187968).

63791420 is an abundant number, since it is smaller than the sum of its proper divisors (110584516).

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

63791420 is a wasteful number, since it uses less digits than its factorization.

63791420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1851 (or 1849 counting only the distinct ones).

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 63791420 is about 7986.9531111682. The cubic root of 63791420 is about 399.5649854106.

The spelling of 63791420 in words is "sixty-three million, seven hundred ninety-one thousand, four hundred twenty".