75575655 has 12 divisors (see below), whose sum is σ = 130997880. Its totient is φ = 40306992.

The previous prime is 75575641. The next prime is 75575657. The reversal of 75575655 is 55657557.

75575655 is a `hidden beast` number, since 75 + 575 + 6 + 5 + 5 = 666.

It is not a de Polignac number, because 75575655 - 2⁸ = 75575399 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45), and also a Moran number because the ratio is a prime number: 1679459 = 75575655 / (7 + 5 + 5 + 7 + 5 + 6 + 5 + 5).

It is a self number, because there is not a number n which added to its sum of digits gives 75575655.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (75575657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 839685 + ... + 839774.

It is an arithmetic number, because the mean of its divisors is an integer number (10916490).

Almost surely, 2^75575655 is an apocalyptic number.

75575655 is a deficient number, since it is larger than the sum of its proper divisors (55422225).

75575655 is a wasteful number, since it uses less digits than its factorization.

75575655 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1679470 (or 1679467 counting only the distinct ones).

The product of its digits is 918750, while the sum is 45.

The square root of 75575655 is about 8693.4259644860. The cubic root of 75575655 is about 422.7925310913.

The spelling of 75575655 in words is "seventy-five million, five hundred seventy-five thousand, six hundred fifty-five".