664615414 has 8 divisors (see below), whose sum is σ = 997193808. Its totient is φ = 332217480.

The previous prime is 664615381. The next prime is 664615463. The reversal of 664615414 is 414516466.

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

It is a congruent number.

It is an unprimeable number.

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, 35497 + ... + 50884.

It is an arithmetic number, because the mean of its divisors is an integer number (124649226).

Almost surely, 2^664615414 is an apocalyptic number.

664615414 is a deficient number, since it is larger than the sum of its proper divisors (332578394).

664615414 is a wasteful number, since it uses less digits than its factorization.

664615414 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90230.

The product of its digits is 69120, while the sum is 37.

The square root of 664615414 is about 25780.1360353277. The cubic root of 664615414 is about 872.6835771059.

The spelling of 664615414 in words is "six hundred sixty-four million, six hundred fifteen thousand, four hundred fourteen".