7650777493 has 4 divisors (see below), whose sum is σ = 7655173708. Its totient is φ = 7646381280.

The previous prime is 7650777439. The next prime is 7650777517. The reversal of 7650777493 is 3947770567.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1666517329 + 5984260164 = 40823^2 + 77358^2 .

It is a cyclic number.

It is not a de Polignac number, because 7650777493 - 2⁹ = 7650776981 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7650777413) 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, 2195496 + ... + 2198977.

It is an arithmetic number, because the mean of its divisors is an integer number (1913793427).

Almost surely, 2^7650777493 is an apocalyptic number.

It is an amenable number.

7650777493 is a deficient number, since it is larger than the sum of its proper divisors (4396215).

7650777493 is a wasteful number, since it uses less digits than its factorization.

7650777493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4396214.

The product of its (nonzero) digits is 7779240, while the sum is 55.

The square root of 7650777493 is about 87468.7229414035. The cubic root of 7650777493 is about 1970.4640865114.

The spelling of 7650777493 in words is "seven billion, six hundred fifty million, seven hundred seventy-seven thousand, four hundred ninety-three".