66032655 has 32 divisors (see below), whose sum is σ = 118734336. Its totient is φ = 31092864.

The previous prime is 66032633. The next prime is 66032663. The reversal of 66032655 is 55623066.

It is not a de Polignac number, because 66032655 - 2⁹ = 66032143 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2877 + ... + 11846.

It is an arithmetic number, because the mean of its divisors is an integer number (3710448).

Almost surely, 2^66032655 is an apocalyptic number.

66032655 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66032655 is a deficient number, since it is larger than the sum of its proper divisors (52701681).

66032655 is a wasteful number, since it uses less digits than its factorization.

66032655 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14767.

The product of its (nonzero) digits is 32400, while the sum is 33.

The square root of 66032655 is about 8126.0479324208. The cubic root of 66032655 is about 404.1906409179.

The spelling of 66032655 in words is "sixty-six million, thirty-two thousand, six hundred fifty-five".