55665670 has 8 divisors (see below), whose sum is σ = 100198224. Its totient is φ = 22266264.

The previous prime is 55665661. The next prime is 55665671. The reversal of 55665670 is 7656655.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55665671) 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, 2783274 + ... + 2783293.

It is an arithmetic number, because the mean of its divisors is an integer number (12524778).

Almost surely, 2^55665670 is an apocalyptic number.

55665670 is a deficient number, since it is larger than the sum of its proper divisors (44532554).

55665670 is a wasteful number, since it uses less digits than its factorization.

55665670 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5566574.

The product of its (nonzero) digits is 189000, while the sum is 40.

The square root of 55665670 is about 7460.9429698933. The cubic root of 55665670 is about 381.8233469548.

It can be divided in two parts, 5566 and 5670, that added together give a square (11236 = 106²).

The spelling of 55665670 in words is "fifty-five million, six hundred sixty-five thousand, six hundred seventy".