145660666 has 8 divisors (see below), whose sum is σ = 219263904. Its totient is φ = 72572700.

The previous prime is 145660663. The next prime is 145660667. The reversal of 145660666 is 666066541.

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

It is not an unprimeable number, because it can be changed into a prime (145660663) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128110 + ... + 129241.

It is an arithmetic number, because the mean of its divisors is an integer number (27407988).

Almost surely, 2^145660666 is an apocalyptic number.

145660666 is a deficient number, since it is larger than the sum of its proper divisors (73603238).

145660666 is a wasteful number, since it uses less digits than its factorization.

145660666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 257636.

The product of its (nonzero) digits is 155520, while the sum is 40.

The square root of 145660666 is about 12068.9960642963. The cubic root of 145660666 is about 526.1554789117.

The spelling of 145660666 in words is "one hundred forty-five million, six hundred sixty thousand, six hundred sixty-six".