230723666 has 4 divisors (see below), whose sum is σ = 346085502. Its totient is φ = 115361832.

The previous prime is 230723663. The next prime is 230723723. The reversal of 230723666 is 666327032.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 133287025 + 97436641 = 11545^2 + 9871^2 .

It is not an unprimeable number, because it can be changed into a prime (230723663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57680915 + ... + 57680918.

Almost surely, 2^230723666 is an apocalyptic number.

230723666 is a deficient number, since it is larger than the sum of its proper divisors (115361836).

230723666 is a wasteful number, since it uses less digits than its factorization.

230723666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115361835.

The product of its (nonzero) digits is 54432, while the sum is 35.

The square root of 230723666 is about 15189.5907120633. The cubic root of 230723666 is about 613.3344813962.

The spelling of 230723666 in words is "two hundred thirty million, seven hundred twenty-three thousand, six hundred sixty-six".