64084420 has 24 divisors (see below), whose sum is σ = 137118744. Its totient is φ = 25149696.

The previous prime is 64084393. The next prime is 64084429. The reversal of 64084420 is 2448046.

It can be written as a sum of positive squares in 4 ways, for example, as 17189316 + 46895104 = 4146^2 + 6848^2 .

It is not an unprimeable number, because it can be changed into a prime (64084429) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29169 + ... + 31288.

It is an arithmetic number, because the mean of its divisors is an integer number (5713281).

Almost surely, 2^64084420 is an apocalyptic number.

It is an amenable number.

64084420 is an abundant number, since it is smaller than the sum of its proper divisors (73034324).

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

64084420 is a wasteful number, since it uses less digits than its factorization.

64084420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60519 (or 60517 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 28.

The square root of 64084420 is about 8005.2745112207. The cubic root of 64084420 is about 400.1757977266.

The spelling of 64084420 in words is "sixty-four million, eighty-four thousand, four hundred twenty".