63320790 has 64 divisors (see below), whose sum is σ = 164606400. Its totient is φ = 15496704.

The previous prime is 63320737. The next prime is 63320809. The reversal of 63320790 is 9702336.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 88956 + ... + 89664.

It is an arithmetic number, because the mean of its divisors is an integer number (2571975).

Almost surely, 2^63320790 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 63320790, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (82303200).

63320790 is an abundant number, since it is smaller than the sum of its proper divisors (101285610).

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

63320790 is a wasteful number, since it uses less digits than its factorization.

63320790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 961.

The product of its (nonzero) digits is 6804, while the sum is 30.

The square root of 63320790 is about 7957.4361448899. The cubic root of 63320790 is about 398.5799437331.

The spelling of 63320790 in words is "sixty-three million, three hundred twenty thousand, seven hundred ninety".