66670434 has 24 divisors (see below), whose sum is σ = 146079180. Its totient is φ = 21973248.

The previous prime is 66670421. The next prime is 66670441. The reversal of 66670434 is 43407666.

It can be written as a sum of positive squares in 2 ways, for example, as 63441225 + 3229209 = 7965^2 + 1797^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 19207 + ... + 22410.

Almost surely, 2^66670434 is an apocalyptic number.

66670434 is an abundant number, since it is smaller than the sum of its proper divisors (79408746).

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

66670434 is a wasteful number, since it uses less digits than its factorization.

66670434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41714 (or 41711 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 36.

The square root of 66670434 is about 8165.1965071271. The cubic root of 66670434 is about 405.4877707885.

The spelling of 66670434 in words is "sixty-six million, six hundred seventy thousand, four hundred thirty-four".