66431034 has 12 divisors (see below), whose sum is σ = 143933946. Its totient is φ = 22143672.

The previous prime is 66431023. The next prime is 66431039. The reversal of 66431034 is 43013466.

66431034 is a `hidden beast` number, since 6 + 643 + 10 + 3 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 43362225 + 23068809 = 6585^2 + 4803^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66430989 and 66431007.

It is not an unprimeable number, because it can be changed into a prime (66431039) 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, 1845289 + ... + 1845324.

Almost surely, 2^66431034 is an apocalyptic number.

66431034 is an abundant number, since it is smaller than the sum of its proper divisors (77502912).

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

66431034 is a wasteful number, since it uses less digits than its factorization.

66431034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3690621 (or 3690618 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 27.

The square root of 66431034 is about 8150.5235414665. The cubic root of 66431034 is about 405.0018472710.

The spelling of 66431034 in words is "sixty-six million, four hundred thirty-one thousand, thirty-four".