66662534 has 4 divisors (see below), whose sum is σ = 99993804. Its totient is φ = 33331266.

The previous prime is 66662509. The next prime is 66662549. The reversal of 66662534 is 43526666.

66662534 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16665632 + ... + 16665635.

It is an arithmetic number, because the mean of its divisors is an integer number (24998451).

Almost surely, 2^66662534 is an apocalyptic number.

66662534 is a deficient number, since it is larger than the sum of its proper divisors (33331270).

66662534 is a wasteful number, since it uses less digits than its factorization.

66662534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33331269.

The product of its digits is 155520, while the sum is 38.

The square root of 66662534 is about 8164.7127322399. The cubic root of 66662534 is about 405.4717542939.

The spelling of 66662534 in words is "sixty-six million, six hundred sixty-two thousand, five hundred thirty-four".