66124555 has 8 divisors (see below), whose sum is σ = 90685152. Its totient is φ = 45342528.

The previous prime is 66124547. The next prime is 66124573. The reversal of 66124555 is 55542166.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66124555 - 2³ = 66124547 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66124555.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 944602 + ... + 944671.

It is an arithmetic number, because the mean of its divisors is an integer number (11335644).

Almost surely, 2^66124555 is an apocalyptic number.

66124555 is a deficient number, since it is larger than the sum of its proper divisors (24560597).

66124555 is a wasteful number, since it uses less digits than its factorization.

66124555 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1889285.

The product of its digits is 36000, while the sum is 34.

The square root of 66124555 is about 8131.7006216412. The cubic root of 66124555 is about 404.3780628390.

The spelling of 66124555 in words is "sixty-six million, one hundred twenty-four thousand, five hundred fifty-five".