9020645 has 4 divisors (see below), whose sum is σ = 10824780. Its totient is φ = 7216512.

The previous prime is 9020639. The next prime is 9020657. The reversal of 9020645 is 5460209.

9020645 is nontrivially palindromic in base 6.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5460209 = 1429 ⋅3821.

It can be written as a sum of positive squares in 2 ways, for example, as 6360484 + 2660161 = 2522^2 + 1631^2 .

It is a cyclic number.

It is not a de Polignac number, because 9020645 - 2¹⁶ = 8955109 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902060 + ... + 902069.

It is an arithmetic number, because the mean of its divisors is an integer number (2706195).

Almost surely, 2^9020645 is an apocalyptic number.

It is an amenable number.

9020645 is a deficient number, since it is larger than the sum of its proper divisors (1804135).

9020645 is a wasteful number, since it uses less digits than its factorization.

9020645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1804134.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 9020645 is about 3003.4388623709. The cubic root of 9020645 is about 208.1673102184.

The spelling of 9020645 in words is "nine million, twenty thousand, six hundred forty-five".