66662434 has 4 divisors (see below), whose sum is σ = 99993654. Its totient is φ = 33331216.

The previous prime is 66662417. The next prime is 66662437. The reversal of 66662434 is 43426666.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 58568409 + 8094025 = 7653^2 + 2845^2 .

It is a junction number, because it is equal to n+sod(n) for n = 66662393 and 66662402.

It is not an unprimeable number, because it can be changed into a prime (66662437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16665607 + ... + 16665610.

Almost surely, 2^66662434 is an apocalyptic number.

66662434 is a deficient number, since it is larger than the sum of its proper divisors (33331220).

66662434 is a wasteful number, since it uses less digits than its factorization.

66662434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33331219.

The product of its digits is 124416, while the sum is 37.

The square root of 66662434 is about 8164.7066083234. The cubic root of 66662434 is about 405.4715515454.

The spelling of 66662434 in words is "sixty-six million, six hundred sixty-two thousand, four hundred thirty-four".