660238343 has 4 divisors (see below), whose sum is σ = 666648528. Its totient is φ = 653828160.

The previous prime is 660238339. The next prime is 660238349. The reversal of 660238343 is 343832066.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 343832066 = 2 ⋅171916033.

It is a cyclic number.

It is not a de Polignac number, because 660238343 - 2² = 660238339 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (660238349) 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, 3204938 + ... + 3205143.

It is an arithmetic number, because the mean of its divisors is an integer number (166662132).

Almost surely, 2^660238343 is an apocalyptic number.

660238343 is a deficient number, since it is larger than the sum of its proper divisors (6410185).

660238343 is a wasteful number, since it uses less digits than its factorization.

660238343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6410184.

The product of its (nonzero) digits is 62208, while the sum is 35.

The square root of 660238343 is about 25695.1034829596. The cubic root of 660238343 is about 870.7635622731.

The spelling of 660238343 in words is "six hundred sixty million, two hundred thirty-eight thousand, three hundred forty-three".