6931577245 has 24 divisors (see below), whose sum is σ = 9081500760. Its totient is φ = 5072215680.

The previous prime is 6931577243. The next prime is 6931577293. The reversal of 6931577245 is 5427751396.

It can be written as a sum of positive squares in 4 ways, for example, as 24970009 + 6906607236 = 4997^2 + 83106^2 .

It is not a de Polignac number, because 6931577245 - 2¹ = 6931577243 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6931577243) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13866 + ... + 118555.

It is an arithmetic number, because the mean of its divisors is an integer number (378395865).

Almost surely, 2^6931577245 is an apocalyptic number.

It is an amenable number.

6931577245 is a deficient number, since it is larger than the sum of its proper divisors (2149923515).

6931577245 is a wasteful number, since it uses less digits than its factorization.

6931577245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132493 (or 132474 counting only the distinct ones).

The product of its digits is 1587600, while the sum is 49.

The square root of 6931577245 is about 83256.0943414955. The cubic root of 6931577245 is about 1906.6780010811.

The spelling of 6931577245 in words is "six billion, nine hundred thirty-one million, five hundred seventy-seven thousand, two hundred forty-five".