55678906 has 8 divisors (see below), whose sum is σ = 87149664. Its totient is φ = 26629020.

The previous prime is 55678871. The next prime is 55678907. The reversal of 55678906 is 60987655.

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

It is a Harshad number since it is a multiple of its sum of digits (46), and also a Moran number because the ratio is a prime number: 1210411 = 55678906 / (5 + 5 + 6 + 7 + 8 + 9 + 0 + 6).

It is not an unprimeable number, because it can be changed into a prime (55678907) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 605160 + ... + 605251.

It is an arithmetic number, because the mean of its divisors is an integer number (10893708).

Almost surely, 2^55678906 is an apocalyptic number.

55678906 is a deficient number, since it is larger than the sum of its proper divisors (31470758).

55678906 is a wasteful number, since it uses less digits than its factorization.

55678906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1210436.

The product of its (nonzero) digits is 453600, while the sum is 46.

The square root of 55678906 is about 7461.8299364164. The cubic root of 55678906 is about 381.8536074565.

The spelling of 55678906 in words is "fifty-five million, six hundred seventy-eight thousand, nine hundred six".