66402343 has 8 divisors (see below), whose sum is σ = 77132960. Its totient is φ = 55982880.

The previous prime is 66402337. The next prime is 66402353. The reversal of 66402343 is 34320466.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66402343 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 (66402353) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 77328 + ... + 78181.

It is an arithmetic number, because the mean of its divisors is an integer number (9641620).

Almost surely, 2^66402343 is an apocalyptic number.

66402343 is a deficient number, since it is larger than the sum of its proper divisors (10730617).

66402343 is a wasteful number, since it uses less digits than its factorization.

66402343 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155577.

The product of its (nonzero) digits is 10368, while the sum is 28.

The square root of 66402343 is about 8148.7632804003. The cubic root of 66402343 is about 404.9435332544.

The spelling of 66402343 in words is "sixty-six million, four hundred two thousand, three hundred forty-three".