7421077666 has 8 divisors (see below), whose sum is σ = 11132047260. Its totient is φ = 3710395248.

The previous prime is 7421077639. The next prime is 7421077681. The reversal of 7421077666 is 6667701247.

It can be written as a sum of positive squares in 2 ways, for example, as 7418204641 + 2873025 = 86129^2 + 1695^2 .

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

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, 12700 + ... + 122488.

Almost surely, 2^7421077666 is an apocalyptic number.

7421077666 is a deficient number, since it is larger than the sum of its proper divisors (3710969594).

7421077666 is a wasteful number, since it uses less digits than its factorization.

7421077666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143588.

The product of its (nonzero) digits is 592704, while the sum is 46.

The square root of 7421077666 is about 86145.6770012286. The cubic root of 7421077666 is about 1950.5435842436.

The spelling of 7421077666 in words is "seven billion, four hundred twenty-one million, seventy-seven thousand, six hundred sixty-six".