66830434 has 16 divisors (see below), whose sum is σ = 115792416. Its totient is φ = 28590400.

The previous prime is 66830431. The next prime is 66830437. The reversal of 66830434 is 43403866.

It is an interprime number because it is at equal distance from previous prime (66830431) and next prime (66830437).

It is a Harshad number since it is a multiple of its sum of digits (34).

It is a self number, because there is not a number n which added to its sum of digits gives 66830434.

It is not an unprimeable number, because it can be changed into a prime (66830431) 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, 88972 + ... + 89719.

It is an arithmetic number, because the mean of its divisors is an integer number (7237026).

Almost surely, 2^66830434 is an apocalyptic number.

66830434 is a deficient number, since it is larger than the sum of its proper divisors (48961982).

66830434 is a wasteful number, since it uses less digits than its factorization.

66830434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 178721.

The product of its (nonzero) digits is 41472, while the sum is 34.

The square root of 66830434 is about 8174.9883180345. The cubic root of 66830434 is about 405.8118835374.

The spelling of 66830434 in words is "sixty-six million, eight hundred thirty thousand, four hundred thirty-four".