455665987 has 8 divisors (see below), whose sum is σ = 531841536. Its totient is φ = 382260552.

The previous prime is 455665981. The next prime is 455665997. The reversal of 455665987 is 789566554.

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 455665987 - 2¹¹ = 455663939 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (455665981) 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, 692173 + ... + 692830.

It is an arithmetic number, because the mean of its divisors is an integer number (66480192).

Almost surely, 2^455665987 is an apocalyptic number.

455665987 is a gapful number since it is divisible by the number (47) formed by its first and last digit.

455665987 is a deficient number, since it is larger than the sum of its proper divisors (76175549).

455665987 is a wasteful number, since it uses less digits than its factorization.

455665987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385057.

The product of its digits is 9072000, while the sum is 55.

The square root of 455665987 is about 21346.3342754675. The cubic root of 455665987 is about 769.5122491511.

The spelling of 455665987 in words is "four hundred fifty-five million, six hundred sixty-five thousand, nine hundred eighty-seven".