66055630 has 8 divisors (see below), whose sum is σ = 118900152. Its totient is φ = 26422248.

The previous prime is 66055607. The next prime is 66055643. The reversal of 66055630 is 3655066.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 66055592 and 66055601.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3302772 + ... + 3302791.

It is an arithmetic number, because the mean of its divisors is an integer number (14862519).

Almost surely, 2^66055630 is an apocalyptic number.

66055630 is a deficient number, since it is larger than the sum of its proper divisors (52844522).

66055630 is a wasteful number, since it uses less digits than its factorization.

66055630 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6605570.

The product of its (nonzero) digits is 16200, while the sum is 31.

The square root of 66055630 is about 8127.4614733015. The cubic root of 66055630 is about 404.2375126926.

The spelling of 66055630 in words is "sixty-six million, fifty-five thousand, six hundred thirty".