66665342 has 16 divisors (see below), whose sum is σ = 103014960. Its totient is φ = 32332608.

The previous prime is 66665341. The next prime is 66665359. The reversal of 66665342 is 24356666.

It is a junction number, because it is equal to n+sod(n) for n = 66665296 and 66665305.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66665341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26858 + ... + 29234.

It is an arithmetic number, because the mean of its divisors is an integer number (6438435).

Almost surely, 2^66665342 is an apocalyptic number.

66665342 is a deficient number, since it is larger than the sum of its proper divisors (36349618).

66665342 is a wasteful number, since it uses less digits than its factorization.

66665342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2795.

The product of its digits is 155520, while the sum is 38.

The square root of 66665342 is about 8164.8846899390. The cubic root of 66665342 is about 405.4774473904.

The spelling of 66665342 in words is "sixty-six million, six hundred sixty-five thousand, three hundred forty-two".