64545419 has 4 divisors (see below), whose sum is σ = 64775400. Its totient is φ = 64315440.

The previous prime is 64545409. The next prime is 64545433. The reversal of 64545419 is 91454546.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-64545419 is a prime.

It is a super-2 number, since 2×64545419² = 8332222227771122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64545409) 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, 114569 + ... + 115130.

It is an arithmetic number, because the mean of its divisors is an integer number (16193850).

Almost surely, 2^64545419 is an apocalyptic number.

64545419 is a deficient number, since it is larger than the sum of its proper divisors (229981).

64545419 is a wasteful number, since it uses less digits than its factorization.

64545419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 229980.

The product of its digits is 86400, while the sum is 38.

The square root of 64545419 is about 8034.0163679196. The cubic root of 64545419 is about 401.1330768946.

It can be divided in two parts, 645 and 45419, that added together give a palindrome (46064).

The spelling of 64545419 in words is "sixty-four million, five hundred forty-five thousand, four hundred nineteen".