66450365 has 16 divisors (see below), whose sum is σ = 84810240. Its totient is φ = 49808640.

The previous prime is 66450341. The next prime is 66450379. The reversal of 66450365 is 56305466.

It is not a de Polignac number, because 66450365 - 2⁶ = 66450301 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 18680 + ... + 21950.

It is an arithmetic number, because the mean of its divisors is an integer number (5300640).

Almost surely, 2^66450365 is an apocalyptic number.

It is an amenable number.

66450365 is a deficient number, since it is larger than the sum of its proper divisors (18359875).

66450365 is a wasteful number, since it uses less digits than its factorization.

66450365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3532.

The product of its (nonzero) digits is 64800, while the sum is 35.

The square root of 66450365 is about 8151.7093299504. The cubic root of 66450365 is about 405.0411277646.

The spelling of 66450365 in words is "sixty-six million, four hundred fifty thousand, three hundred sixty-five".