423653066 has 4 divisors (see below), whose sum is σ = 635479602. Its totient is φ = 211826532.

The previous prime is 423653057. The next prime is 423653081. The reversal of 423653066 is 660356324.

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., 273075625 + 150577441 = 16525^2 + 12271^2 .

It is a Curzon 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, 105913265 + ... + 105913268.

Almost surely, 2^423653066 is an apocalyptic number.

423653066 is a deficient number, since it is larger than the sum of its proper divisors (211826536).

423653066 is a wasteful number, since it uses less digits than its factorization.

423653066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211826535.

The product of its (nonzero) digits is 77760, while the sum is 35.

The square root of 423653066 is about 20582.8342557579. The cubic root of 423653066 is about 751.0521919067.

The spelling of 423653066 in words is "four hundred twenty-three million, six hundred fifty-three thousand, sixty-six".