65662445 has 4 divisors (see below), whose sum is σ = 78794940. Its totient is φ = 52529952.

The previous prime is 65662411. The next prime is 65662451. The reversal of 65662445 is 54426656.

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

It can be written as a sum of positive squares in 2 ways, for example, as 25694761 + 39967684 = 5069^2 + 6322^2 .

It is a cyclic number.

It is not a de Polignac number, because 65662445 - 2⁸ = 65662189 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 65662399 and 65662408.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6566240 + ... + 6566249.

It is an arithmetic number, because the mean of its divisors is an integer number (19698735).

Almost surely, 2^65662445 is an apocalyptic number.

It is an amenable number.

65662445 is a deficient number, since it is larger than the sum of its proper divisors (13132495).

65662445 is a wasteful number, since it uses less digits than its factorization.

65662445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13132494.

The product of its digits is 172800, while the sum is 38.

The square root of 65662445 is about 8103.2366989987. The cubic root of 65662445 is about 403.4338641710.

The spelling of 65662445 in words is "sixty-five million, six hundred sixty-two thousand, four hundred forty-five".