6400957701 has 4 divisors (see below), whose sum is σ = 8534610272. Its totient is φ = 4267305132.

The previous prime is 6400957681. The next prime is 6400957721. The reversal of 6400957701 is 1077590046.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (6400957681) and next prime (6400957721).

It is not a de Polignac number, because 6400957701 - 2¹⁰ = 6400956677 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 6400957701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6400957721) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1066826281 + ... + 1066826286.

It is an arithmetic number, because the mean of its divisors is an integer number (2133652568).

Almost surely, 2^6400957701 is an apocalyptic number.

It is an amenable number.

6400957701 is a deficient number, since it is larger than the sum of its proper divisors (2133652571).

6400957701 is a wasteful number, since it uses less digits than its factorization.

6400957701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2133652570.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 6400957701 is about 80005.9854073431. The cubic root of 6400957701 is about 1856.7281382900.

The spelling of 6400957701 in words is "six billion, four hundred million, nine hundred fifty-seven thousand, seven hundred one".