664414451 has 8 divisors (see below), whose sum is σ = 706656384. Its totient is φ = 622523520.

The previous prime is 664414427. The next prime is 664414453. The reversal of 664414451 is 154414466.

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 664414451 - 2¹⁰ = 664413427 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (664414453) 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, 83840 + ... + 91421.

It is an arithmetic number, because the mean of its divisors is an integer number (88332048).

Almost surely, 2^664414451 is an apocalyptic number.

664414451 is a deficient number, since it is larger than the sum of its proper divisors (42241933).

664414451 is a wasteful number, since it uses less digits than its factorization.

664414451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175501.

The product of its digits is 46080, while the sum is 35.

The square root of 664414451 is about 25776.2381079940. The cubic root of 664414451 is about 872.5956090442.

The spelling of 664414451 in words is "six hundred sixty-four million, four hundred fourteen thousand, four hundred fifty-one".