666733342 has 16 divisors (see below), whose sum is σ = 1091750400. Its totient is φ = 302857240.

The previous prime is 666733297. The next prime is 666733357. The reversal of 666733342 is 243337666.

It is a junction number, because it is equal to n+sod(n) for n = 666733295 and 666733304.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26259 + ... + 44977.

It is an arithmetic number, because the mean of its divisors is an integer number (68234400).

Almost surely, 2^666733342 is an apocalyptic number.

666733342 is a deficient number, since it is larger than the sum of its proper divisors (425017058).

666733342 is a wasteful number, since it uses less digits than its factorization.

666733342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20351.

The product of its digits is 326592, while the sum is 40.

The square root of 666733342 is about 25821.1801047125. The cubic root of 666733342 is about 873.6095868998.

The spelling of 666733342 in words is "six hundred sixty-six million, seven hundred thirty-three thousand, three hundred forty-two".