66930534 has 24 divisors (see below), whose sum is σ = 158199912. Its totient is φ = 20281920.

The previous prime is 66930511. The next prime is 66930557. The reversal of 66930534 is 43503966.

It is an interprime number because it is at equal distance from previous prime (66930511) and next prime (66930557).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 168819 + ... + 169214.

It is an arithmetic number, because the mean of its divisors is an integer number (6591663).

Almost surely, 2^66930534 is an apocalyptic number.

66930534 is an abundant number, since it is smaller than the sum of its proper divisors (91269378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66930534 is a wasteful number, since it uses less digits than its factorization.

66930534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 338052 (or 338049 counting only the distinct ones).

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

The square root of 66930534 is about 8181.1083601185. The cubic root of 66930534 is about 406.0143935946.

The spelling of 66930534 in words is "sixty-six million, nine hundred thirty thousand, five hundred thirty-four".