6940000257 has 16 divisors (see below), whose sum is σ = 9418776000. Its totient is φ = 4544089344.

The previous prime is 6940000189. The next prime is 6940000261. The reversal of 6940000257 is 7520000496.

It is not a de Polignac number, because 6940000257 - 2¹⁴ = 6939983873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6940000157) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 182469 + ... + 217197.

It is an arithmetic number, because the mean of its divisors is an integer number (588673500).

It is a Proth number, since it is equal to 13237 ⋅ 2¹⁹ + 1 and 13237 < 2¹⁹.

Almost surely, 2^6940000257 is an apocalyptic number.

It is an amenable number.

6940000257 is a deficient number, since it is larger than the sum of its proper divisors (2478775743).

6940000257 is a wasteful number, since it uses less digits than its factorization.

6940000257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35920.

The product of its (nonzero) digits is 15120, while the sum is 33.

The square root of 6940000257 is about 83306.6639411278. The cubic root of 6940000257 is about 1907.4499980995.

The spelling of 6940000257 in words is "six billion, nine hundred forty million, two hundred fifty-seven", and thus it is an aban number.