66577107 has 8 divisors (see below), whose sum is σ = 88811776. Its totient is φ = 44363592.

The previous prime is 66577099. The next prime is 66577109. The reversal of 66577107 is 70177566.

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

It is not a de Polignac number, because 66577107 - 2³ = 66577099 is a prime.

It is a super-2 number, since 2×66577107² = 8865022352978898, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66577109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4818 + ... + 12504.

It is an arithmetic number, because the mean of its divisors is an integer number (11101472).

Almost surely, 2^66577107 is an apocalyptic number.

66577107 is a deficient number, since it is larger than the sum of its proper divisors (22234669).

66577107 is a wasteful number, since it uses less digits than its factorization.

66577107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10577.

The product of its (nonzero) digits is 61740, while the sum is 39.

The square root of 66577107 is about 8159.4795789928. The cubic root of 66577107 is about 405.2984783415.

The spelling of 66577107 in words is "sixty-six million, five hundred seventy-seven thousand, one hundred seven".