66905343 has 6 divisors (see below), whose sum is σ = 96641064. Its totient is φ = 44603556.

The previous prime is 66905341. The next prime is 66905381. The reversal of 66905343 is 34350966.

It is not a de Polignac number, because 66905343 - 2¹ = 66905341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 66905298 and 66905307.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66905341) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3716955 + ... + 3716972.

It is an arithmetic number, because the mean of its divisors is an integer number (16106844).

Almost surely, 2^66905343 is an apocalyptic number.

66905343 is a deficient number, since it is larger than the sum of its proper divisors (29735721).

66905343 is a wasteful number, since it uses less digits than its factorization.

66905343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7433933 (or 7433930 counting only the distinct ones).

The product of its (nonzero) digits is 58320, while the sum is 36.

The square root of 66905343 is about 8179.5686316578. The cubic root of 66905343 is about 405.9634492725.

The spelling of 66905343 in words is "sixty-six million, nine hundred five thousand, three hundred forty-three".