55666634 has 8 divisors (see below), whose sum is σ = 83671488. Its totient is φ = 27776140.

The previous prime is 55666621. The next prime is 55666649. The reversal of 55666634 is 43666655.

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 = 55666591 and 55666600.

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, 27362 + ... + 29325.

It is an arithmetic number, because the mean of its divisors is an integer number (10458936).

Almost surely, 2^55666634 is an apocalyptic number.

55666634 is a deficient number, since it is larger than the sum of its proper divisors (28004854).

55666634 is a wasteful number, since it uses less digits than its factorization.

55666634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57180.

The product of its digits is 388800, while the sum is 41.

The square root of 55666634 is about 7461.0075727076. The cubic root of 55666634 is about 381.8255510397.

The spelling of 55666634 in words is "fifty-five million, six hundred sixty-six thousand, six hundred thirty-four".