664772472419 has 8 divisors (see below), whose sum is σ = 737497967040. Its totient is φ = 594095583400.

The previous prime is 664772472389. The next prime is 664772472431. The reversal of 664772472419 is 914274277466.

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

It is not a de Polignac number, because 664772472419 - 2¹² = 664772468323 is a prime.

It is a super-3 number, since 3×664772472419³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664772472449) 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, 512150717 + ... + 512152014.

It is an arithmetic number, because the mean of its divisors is an integer number (92187245880).

Almost surely, 2^664772472419 is an apocalyptic number.

664772472419 is a deficient number, since it is larger than the sum of its proper divisors (72725494621).

664772472419 is a wasteful number, since it uses less digits than its factorization.

664772472419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024302801.

The product of its digits is 28449792, while the sum is 59.

The spelling of 664772472419 in words is "six hundred sixty-four billion, seven hundred seventy-two million, four hundred seventy-two thousand, four hundred nineteen".