706736666 has 4 divisors (see below), whose sum is σ = 1060105002. Its totient is φ = 353368332.

The previous prime is 706736587. The next prime is 706736669. The reversal of 706736666 is 666637607.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 666637607 = 13177 ⋅50591.

It can be written as a sum of positive squares in only one way, i.e., 699867025 + 6869641 = 26455^2 + 2621^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 706736666.

It is not an unprimeable number, because it can be changed into a prime (706736669) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 176684165 + ... + 176684168.

Almost surely, 2^706736666 is an apocalyptic number.

706736666 is a deficient number, since it is larger than the sum of its proper divisors (353368336).

706736666 is a wasteful number, since it uses less digits than its factorization.

706736666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353368335.

The product of its (nonzero) digits is 1143072, while the sum is 47.

The square root of 706736666 is about 26584.5192922498. The cubic root of 706736666 is about 890.7432523743.

The spelling of 706736666 in words is "seven hundred six million, seven hundred thirty-six thousand, six hundred sixty-six".