66202045 has 32 divisors (see below), whose sum is σ = 99009792. Its totient is φ = 41375232.

The previous prime is 66202013. The next prime is 66202049. The reversal of 66202045 is 54020266.

It is a cyclic number.

It is not a de Polignac number, because 66202045 - 2⁵ = 66202013 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66202049) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 36889 + ... + 38641.

It is an arithmetic number, because the mean of its divisors is an integer number (3094056).

Almost surely, 2^66202045 is an apocalyptic number.

66202045 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

It is an amenable number.

66202045 is a deficient number, since it is larger than the sum of its proper divisors (32807747).

66202045 is a wasteful number, since it uses less digits than its factorization.

66202045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1861.

The product of its (nonzero) digits is 2880, while the sum is 25.

The square root of 66202045 is about 8136.4639125360. The cubic root of 66202045 is about 404.5359619415.

The spelling of 66202045 in words is "sixty-six million, two hundred two thousand, forty-five".