64974619 has 4 divisors (see below), whose sum is σ = 64997496. Its totient is φ = 64951744.

The previous prime is 64974601. The next prime is 64974647. The reversal of 64974619 is 91647946.

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

It is a cyclic number.

It is not a de Polignac number, because 64974619 - 2⁷ = 64974491 is a prime.

It is a super-2 number, since 2×64974619² = 8443402228390322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (64974719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6454 + ... + 13099.

It is an arithmetic number, because the mean of its divisors is an integer number (16249374).

Almost surely, 2^64974619 is an apocalyptic number.

64974619 is a deficient number, since it is larger than the sum of its proper divisors (22877).

64974619 is a wasteful number, since it uses less digits than its factorization.

64974619 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22876.

The product of its digits is 326592, while the sum is 46.

The square root of 64974619 is about 8060.6835318104. The cubic root of 64974619 is about 402.0202356917.

The spelling of 64974619 in words is "sixty-four million, nine hundred seventy-four thousand, six hundred nineteen".