66254955 has 16 divisors (see below), whose sum is σ = 114162720. Its totient is φ = 32617728.

The previous prime is 66254939. The next prime is 66254963. The reversal of 66254955 is 55945266.

It is not a de Polignac number, because 66254955 - 2⁴ = 66254939 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 169690 + ... + 170079.

It is an arithmetic number, because the mean of its divisors is an integer number (7135170).

Almost surely, 2^66254955 is an apocalyptic number.

66254955 is a gapful number since it is divisible by the number (65) formed by its first and last digit.

66254955 is a deficient number, since it is larger than the sum of its proper divisors (47907765).

66254955 is a wasteful number, since it uses less digits than its factorization.

66254955 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 339790.

The product of its digits is 324000, while the sum is 42.

The square root of 66254955 is about 8139.7146755891. The cubic root of 66254955 is about 404.6437043237.

The spelling of 66254955 in words is "sixty-six million, two hundred fifty-four thousand, nine hundred fifty-five".