66286434 has 16 divisors (see below), whose sum is σ = 140371488. Its totient is φ = 20795712.

The previous prime is 66286427. The next prime is 66286457. The reversal of 66286434 is 43468266.

It is a junction number, because it is equal to n+sod(n) for n = 66286392 and 66286401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 324832 + ... + 325035.

It is an arithmetic number, because the mean of its divisors is an integer number (8773218).

Almost surely, 2^66286434 is an apocalyptic number.

66286434 is an abundant number, since it is smaller than the sum of its proper divisors (74085054).

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

66286434 is a wasteful number, since it uses less digits than its factorization.

66286434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649889.

The product of its digits is 165888, while the sum is 39.

The square root of 66286434 is about 8141.6481132508. The cubic root of 66286434 is about 404.7077788390.

The spelling of 66286434 in words is "sixty-six million, two hundred eighty-six thousand, four hundred thirty-four".