6900916257 has 10 divisors (see below), whose sum is σ = 10308776258. Its totient is φ = 4600610784.

The previous prime is 6900916249. The next prime is 6900916273. The reversal of 6900916257 is 7526190096.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 5837112801 + 1063803456 = 76401^2 + 32616^2 .

It is not a de Polignac number, because 6900916257 - 2³ = 6900916249 is a prime.

It is a super-2 number, since 2×6900916257² = 95245290372253780098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6900916207) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 42598168 + ... + 42598329.

Almost surely, 2^6900916257 is an apocalyptic number.

It is an amenable number.

6900916257 is a deficient number, since it is larger than the sum of its proper divisors (3407860001).

6900916257 is an equidigital number, since it uses as much as digits as its factorization.

6900916257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85196509 (or 85196500 counting only the distinct ones).

The product of its (nonzero) digits is 204120, while the sum is 45.

The square root of 6900916257 is about 83071.7536651298. The cubic root of 6900916257 is about 1903.8625263572.

The spelling of 6900916257 in words is "six billion, nine hundred million, nine hundred sixteen thousand, two hundred fifty-seven".