6917379257 has 2 divisors, whose sum is σ = 6917379258. Its totient is φ = 6917379256.

The previous prime is 6917379253. The next prime is 6917379281. The reversal of 6917379257 is 7529737196.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5155814416 + 1761564841 = 71804^2 + 41971^2 .

It is a cyclic number.

It is not a de Polignac number, because 6917379257 - 2² = 6917379253 is a prime.

It is not a weakly prime, because it can be changed into another prime (6917379253) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3458689628 + 3458689629.

It is an arithmetic number, because the mean of its divisors is an integer number (3458689629).

Almost surely, 2^6917379257 is an apocalyptic number.

It is an amenable number.

6917379257 is a deficient number, since it is larger than the sum of its proper divisors (1).

6917379257 is an equidigital number, since it uses as much as digits as its factorization.

6917379257 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5000940, while the sum is 56.

The square root of 6917379257 is about 83170.7836743168. The cubic root of 6917379257 is about 1905.3752915292.

The spelling of 6917379257 in words is "six billion, nine hundred seventeen million, three hundred seventy-nine thousand, two hundred fifty-seven".