66579122 has 4 divisors (see below), whose sum is σ = 99868686. Its totient is φ = 33289560.

The previous prime is 66579101. The next prime is 66579131. The reversal of 66579122 is 22197566.

It is a happy number.

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., 58967041 + 7612081 = 7679^2 + 2759^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16644779 + ... + 16644782.

Almost surely, 2^66579122 is an apocalyptic number.

66579122 is a deficient number, since it is larger than the sum of its proper divisors (33289564).

66579122 is a wasteful number, since it uses less digits than its factorization.

66579122 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33289563.

The product of its digits is 45360, while the sum is 38.

The square root of 66579122 is about 8159.6030540707. The cubic root of 66579122 is about 405.3025671754.

The spelling of 66579122 in words is "sixty-six million, five hundred seventy-nine thousand, one hundred twenty-two".