66528465 has 16 divisors (see below), whose sum is σ = 110116800. Its totient is φ = 34258112.

The previous prime is 66528461. The next prime is 66528467. The reversal of 66528465 is 56482566.

It is a cyclic number.

It is not a de Polignac number, because 66528465 - 2² = 66528461 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66528461) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 76035 + ... + 76904.

It is an arithmetic number, because the mean of its divisors is an integer number (6882300).

Almost surely, 2^66528465 is an apocalyptic number.

It is an amenable number.

66528465 is a deficient number, since it is larger than the sum of its proper divisors (43588335).

66528465 is a wasteful number, since it uses less digits than its factorization.

66528465 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 152976.

The product of its digits is 345600, while the sum is 42.

The square root of 66528465 is about 8156.4983295529. The cubic root of 66528465 is about 405.1997490503.

The spelling of 66528465 in words is "sixty-six million, five hundred twenty-eight thousand, four hundred sixty-five".