66263485 has 8 divisors (see below), whose sum is σ = 81665496. Its totient is φ = 51577920.

The previous prime is 66263479. The next prime is 66263537. The reversal of 66263485 is 58436266.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 24970009 + 41293476 = 4997^2 + 6426^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66263485 - 2⁷ = 66263357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 178906 + ... + 179275.

It is an arithmetic number, because the mean of its divisors is an integer number (10208187).

Almost surely, 2^66263485 is an apocalyptic number.

It is an amenable number.

66263485 is a deficient number, since it is larger than the sum of its proper divisors (15402011).

66263485 is a wasteful number, since it uses less digits than its factorization.

66263485 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 358223.

The product of its digits is 207360, while the sum is 40.

The square root of 66263485 is about 8140.2386328657. The cubic root of 66263485 is about 404.6610688750.

The spelling of 66263485 in words is "sixty-six million, two hundred sixty-three thousand, four hundred eighty-five".