6462761666 has 4 divisors (see below), whose sum is σ = 9694142502. Its totient is φ = 3231380832.

The previous prime is 6462761609. The next prime is 6462761681. The reversal of 6462761666 is 6661672646.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6095081041 + 367680625 = 78071^2 + 19175^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1615690415 + ... + 1615690418.

Almost surely, 2^6462761666 is an apocalyptic number.

6462761666 is a deficient number, since it is larger than the sum of its proper divisors (3231380836).

6462761666 is a wasteful number, since it uses less digits than its factorization.

6462761666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3231380835.

The product of its digits is 2612736, while the sum is 50.

The square root of 6462761666 is about 80391.3034226962. The cubic root of 6462761666 is about 1862.6848406315.

The spelling of 6462761666 in words is "six billion, four hundred sixty-two million, seven hundred sixty-one thousand, six hundred sixty-six".