660662455 has 8 divisors (see below), whose sum is σ = 803961504. Its totient is φ = 521085600.

The previous prime is 660662423. The next prime is 660662459. The reversal of 660662455 is 554266066.

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

It is not a de Polignac number, because 660662455 - 2⁵ = 660662423 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660662459) 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, 930156 + ... + 930865.

It is an arithmetic number, because the mean of its divisors is an integer number (100495188).

Almost surely, 2^660662455 is an apocalyptic number.

660662455 is a deficient number, since it is larger than the sum of its proper divisors (143299049).

660662455 is a wasteful number, since it uses less digits than its factorization.

660662455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861097.

The product of its (nonzero) digits is 259200, while the sum is 40.

The square root of 660662455 is about 25703.3549366615. The cubic root of 660662455 is about 870.9499708294.

The spelling of 660662455 in words is "six hundred sixty million, six hundred sixty-two thousand, four hundred fifty-five".