66502755 has 64 divisors (see below), whose sum is σ = 135820800. Its totient is φ = 30533760.

The previous prime is 66502741. The next prime is 66502763. The reversal of 66502755 is 55720566.

It is not a de Polignac number, because 66502755 - 2⁹ = 66502243 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 27037 + ... + 29393.

It is an arithmetic number, because the mean of its divisors is an integer number (2122200).

Almost surely, 2^66502755 is an apocalyptic number.

66502755 is an abundant number, since it is smaller than the sum of its proper divisors (69318045).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66502755 is a wasteful number, since it uses less digits than its factorization.

66502755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2401 (or 2395 counting only the distinct ones).

The product of its (nonzero) digits is 63000, while the sum is 36.

The square root of 66502755 is about 8154.9221332886. The cubic root of 66502755 is about 405.1475456924.

The spelling of 66502755 in words is "sixty-six million, five hundred two thousand, seven hundred fifty-five".