455402666 has 4 divisors (see below), whose sum is σ = 683104002. Its totient is φ = 227701332.

The previous prime is 455402641. The next prime is 455402669. The reversal of 455402666 is 666204554.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666204554 = 2 ⋅333102277.

It can be written as a sum of positive squares in only one way, i.e., 315808441 + 139594225 = 17771^2 + 11815^2 .

It is not an unprimeable number, because it can be changed into a prime (455402669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 113850665 + ... + 113850668.

Almost surely, 2^455402666 is an apocalyptic number.

455402666 is a deficient number, since it is larger than the sum of its proper divisors (227701336).

455402666 is a wasteful number, since it uses less digits than its factorization.

455402666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 227701335.

The product of its (nonzero) digits is 172800, while the sum is 38.

The square root of 455402666 is about 21340.1655569960. The cubic root of 455402666 is about 769.3639915932.

The spelling of 455402666 in words is "four hundred fifty-five million, four hundred two thousand, six hundred sixty-six".