66152755 has 4 divisors (see below), whose sum is σ = 79383312. Its totient is φ = 52922200.

The previous prime is 66152753. The next prime is 66152767. The reversal of 66152755 is 55725166.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 66152755 - 2¹ = 66152753 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66152753) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6615271 + ... + 6615280.

It is an arithmetic number, because the mean of its divisors is an integer number (19845828).

Almost surely, 2^66152755 is an apocalyptic number.

66152755 is a deficient number, since it is larger than the sum of its proper divisors (13230557).

66152755 is a wasteful number, since it uses less digits than its factorization.

66152755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13230556.

The product of its digits is 63000, while the sum is 37.

The square root of 66152755 is about 8133.4343914487. The cubic root of 66152755 is about 404.4355394233.

The spelling of 66152755 in words is "sixty-six million, one hundred fifty-two thousand, seven hundred fifty-five".