66103677 has 6 divisors (see below), whose sum is σ = 95483102. Its totient is φ = 44069112.

The previous prime is 66103669. The next prime is 66103711. The reversal of 66103677 is 77630166.

66103677 is a `hidden beast` number, since 6 + 610 + 36 + 7 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 62394201 + 3709476 = 7899^2 + 1926^2 .

It is not a de Polignac number, because 66103677 - 2³ = 66103669 is a prime.

It is a super-2 number, since 2×66103677² = 8739392225840658, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66103277) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3672418 + ... + 3672435.

Almost surely, 2^66103677 is an apocalyptic number.

It is an amenable number.

66103677 is a deficient number, since it is larger than the sum of its proper divisors (29379425).

66103677 is a wasteful number, since it uses less digits than its factorization.

66103677 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7344859 (or 7344856 counting only the distinct ones).

The product of its (nonzero) digits is 31752, while the sum is 36.

The square root of 66103677 is about 8130.4167789849. The cubic root of 66103677 is about 404.3354992562.

The spelling of 66103677 in words is "sixty-six million, one hundred three thousand, six hundred seventy-seven".