7779634066 has 8 divisors (see below), whose sum is σ = 11676708540. Its totient is φ = 3887397888.

The previous prime is 7779634043. The next prime is 7779634069. The reversal of 7779634066 is 6604369777.

It can be written as a sum of positive squares in 2 ways, for example, as 6984112041 + 795522025 = 83571^2 + 28205^2 .

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 = 7779633998 and 7779634016.

It is not an unprimeable number, because it can be changed into a prime (7779634069) 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, 1205551 + ... + 1211986.

Almost surely, 2^7779634066 is an apocalyptic number.

7779634066 is a deficient number, since it is larger than the sum of its proper divisors (3897074474).

7779634066 is a wasteful number, since it uses less digits than its factorization.

7779634066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2419148.

The product of its (nonzero) digits is 8001504, while the sum is 55.

The square root of 7779634066 is about 88202.2339059505. The cubic root of 7779634066 is about 1981.4649283684.

The spelling of 7779634066 in words is "seven billion, seven hundred seventy-nine million, six hundred thirty-four thousand, sixty-six".