64045619 has 8 divisors (see below), whose sum is σ = 71493312. Its totient is φ = 56868840.

The previous prime is 64045609. The next prime is 64045651. The reversal of 64045619 is 91654046.

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 64045619 - 2⁴ = 64045603 is a prime.

It is a super-2 number, since 2×64045619² = 8203682626186322, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (64045609) 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, 67229 + ... + 68174.

It is an arithmetic number, because the mean of its divisors is an integer number (8936664).

Almost surely, 2^64045619 is an apocalyptic number.

64045619 is a deficient number, since it is larger than the sum of its proper divisors (7447693).

64045619 is a wasteful number, since it uses less digits than its factorization.

64045619 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135457.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 64045619 is about 8002.8506796016. The cubic root of 64045619 is about 400.0950170110.

The spelling of 64045619 in words is "sixty-four million, forty-five thousand, six hundred nineteen".