64820802 has 32 divisors (see below), whose sum is σ = 134929152. Its totient is φ = 20743424.

The previous prime is 64820773. The next prime is 64820803. The reversal of 64820802 is 20802846.

It is a happy number.

64820802 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a self number, because there is not a number n which added to its sum of digits gives 64820802.

It is not an unprimeable number, because it can be changed into a prime (64820803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12778 + ... + 17114.

It is an arithmetic number, because the mean of its divisors is an integer number (4216536).

Almost surely, 2^64820802 is an apocalyptic number.

64820802 is an abundant number, since it is smaller than the sum of its proper divisors (70108350).

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

64820802 is a wasteful number, since it uses less digits than its factorization.

64820802 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4442.

The product of its (nonzero) digits is 6144, while the sum is 30.

The square root of 64820802 is about 8051.1366899339. The cubic root of 64820802 is about 401.7027455258.

The spelling of 64820802 in words is "sixty-four million, eight hundred twenty thousand, eight hundred two".