66232565 has 12 divisors (see below), whose sum is σ = 92455596. Its totient is φ = 45416448.

The previous prime is 66232511. The next prime is 66232597. The reversal of 66232565 is 56523266.

It can be written as a sum of positive squares in 2 ways, for example, as 42016324 + 24216241 = 6482^2 + 4921^2 .

It is not a de Polignac number, because 66232565 - 2⁶ = 66232501 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 134924 + ... + 135413.

It is an arithmetic number, because the mean of its divisors is an integer number (7704633).

Almost surely, 2^66232565 is an apocalyptic number.

It is an amenable number.

66232565 is a deficient number, since it is larger than the sum of its proper divisors (26223031).

66232565 is a wasteful number, since it uses less digits than its factorization.

66232565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270356 (or 270349 counting only the distinct ones).

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

The square root of 66232565 is about 8138.3392040391. The cubic root of 66232565 is about 404.5981178299.

The spelling of 66232565 in words is "sixty-six million, two hundred thirty-two thousand, five hundred sixty-five".