64619089 has 8 divisors (see below), whose sum is σ = 65793992. Its totient is φ = 63452160.

The previous prime is 64619083. The next prime is 64619111. The reversal of 64619089 is 98091646.

It can be written as a sum of positive squares in 4 ways, for example, as 5452225 + 59166864 = 2335^2 + 7692^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 64619089 - 2⁹ = 64618577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64619083) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15757 + ... + 19429.

It is an arithmetic number, because the mean of its divisors is an integer number (8224249).

Almost surely, 2^64619089 is an apocalyptic number.

It is an amenable number.

64619089 is a deficient number, since it is larger than the sum of its proper divisors (1174903).

64619089 is a wasteful number, since it uses less digits than its factorization.

64619089 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3987.

The product of its (nonzero) digits is 93312, while the sum is 43.

The square root of 64619089 is about 8038.5999402881. The cubic root of 64619089 is about 401.2856321976.

The spelling of 64619089 in words is "sixty-four million, six hundred nineteen thousand, eighty-nine".