6923779357 has 6 divisors (see below), whose sum is σ = 7610435294. Its totient is φ = 6294344760.

The previous prime is 6923779337. The next prime is 6923779381. The reversal of 6923779357 is 7539773296.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 4401128281 + 2522651076 = 66341^2 + 50226^2 .

It is not a de Polignac number, because 6923779357 - 2⁷ = 6923779229 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6923779307) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28610538 + ... + 28610779.

Almost surely, 2^6923779357 is an apocalyptic number.

It is an amenable number.

6923779357 is a deficient number, since it is larger than the sum of its proper divisors (686655937).

6923779357 is a wasteful number, since it uses less digits than its factorization.

6923779357 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57221339 (or 57221328 counting only the distinct ones).

The product of its digits is 15002820, while the sum is 58.

The square root of 6923779357 is about 83209.2504292642. The cubic root of 6923779357 is about 1905.9627410525.

The spelling of 6923779357 in words is "six billion, nine hundred twenty-three million, seven hundred seventy-nine thousand, three hundred fifty-seven".