66754107 has 24 divisors (see below), whose sum is σ = 111219680. Its totient is φ = 37791360.

The previous prime is 66754099. The next prime is 66754111. The reversal of 66754107 is 70145766.

It is not a de Polignac number, because 66754107 - 2³ = 66754099 is a prime.

It is a super-2 number, since 2×66754107² = 8912221602734898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66754007) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 2007 + ... + 11727.

Almost surely, 2^66754107 is an apocalyptic number.

66754107 is a deficient number, since it is larger than the sum of its proper divisors (44465573).

66754107 is a wasteful number, since it uses less digits than its factorization.

66754107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9843 (or 9840 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 66754107 is about 8170.3186596362. The cubic root of 66754107 is about 405.6573321790.

The spelling of 66754107 in words is "sixty-six million, seven hundred fifty-four thousand, one hundred seven".