6356197681 has 8 divisors (see below), whose sum is σ = 6502771584. Its totient is φ = 6211208640.

The previous prime is 6356197657. The next prime is 6356197691. The reversal of 6356197681 is 1867916536.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6356197681 - 2¹⁷ = 6356066609 is a prime.

It is a super-2 number, since 2×6356197681² = 80802497919899555522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6356197691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 388101 + ... + 404146.

It is an arithmetic number, because the mean of its divisors is an integer number (812846448).

Almost surely, 2^6356197681 is an apocalyptic number.

It is an amenable number.

6356197681 is a deficient number, since it is larger than the sum of its proper divisors (146573903).

6356197681 is a wasteful number, since it uses less digits than its factorization.

6356197681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 792431.

The product of its digits is 1632960, while the sum is 52.

The square root of 6356197681 is about 79725.7654776673. The cubic root of 6356197681 is about 1852.3901593341.

The spelling of 6356197681 in words is "six billion, three hundred fifty-six million, one hundred ninety-seven thousand, six hundred eighty-one".