7770044666 has 8 divisors (see below), whose sum is σ = 11657826624. Its totient is φ = 3884102460.

The previous prime is 7770044663. The next prime is 7770044683. The reversal of 7770044666 is 6664400777.

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

It is a super-2 number, since 2×7770044666² (a number of 21 digits) contains 22 as substring.

It is a zygodrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 7770044666.

It is not an unprimeable number, because it can be changed into a prime (7770044663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449330 + ... + 466301.

It is an arithmetic number, because the mean of its divisors is an integer number (1457228328).

Almost surely, 2^7770044666 is an apocalyptic number.

7770044666 is a deficient number, since it is larger than the sum of its proper divisors (3887781958).

7770044666 is a wasteful number, since it uses less digits than its factorization.

7770044666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 919876.

The product of its (nonzero) digits is 1185408, while the sum is 47.

The square root of 7770044666 is about 88147.8568429205. The cubic root of 7770044666 is about 1980.6504568025.

The spelling of 7770044666 in words is "seven billion, seven hundred seventy million, forty-four thousand, six hundred sixty-six".