64461580 has 12 divisors (see below), whose sum is σ = 135369360. Its totient is φ = 25784624.

The previous prime is 64461559. The next prime is 64461587. The reversal of 64461580 is 8516446.

It is not an unprimeable number, because it can be changed into a prime (64461587) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1611520 + ... + 1611559.

It is an arithmetic number, because the mean of its divisors is an integer number (11280780).

Almost surely, 2^64461580 is an apocalyptic number.

It is an amenable number.

64461580 is an abundant number, since it is smaller than the sum of its proper divisors (70907780).

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

64461580 is a wasteful number, since it uses less digits than its factorization.

64461580 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3223088 (or 3223086 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 64461580 is about 8028.7969210835. The cubic root of 64461580 is about 400.9593224120.

The spelling of 64461580 in words is "sixty-four million, four hundred sixty-one thousand, five hundred eighty".