6410940861 has 8 divisors (see below), whose sum is σ = 9205453600. Its totient is φ = 3945194352.

The previous prime is 6410940797. The next prime is 6410940881. The reversal of 6410940861 is 1680490146.

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

It is not a de Polignac number, because 6410940861 - 2⁶ = 6410940797 is a prime.

It is a super-2 number, since 2×6410940861² = 82200325446478842642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 164383099 = 6410940861 / (6 + 4 + 1 + 0 + 9 + 4 + 0 + 8 + 6 + 1).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6410940881) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82191511 + ... + 82191588.

It is an arithmetic number, because the mean of its divisors is an integer number (1150681700).

Almost surely, 2^6410940861 is an apocalyptic number.

It is an amenable number.

6410940861 is a deficient number, since it is larger than the sum of its proper divisors (2794512739).

6410940861 is a wasteful number, since it uses less digits than its factorization.

6410940861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 164383115.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 6410940861 is about 80068.3511819745. The cubic root of 6410940861 is about 1857.6929098556.

The spelling of 6410940861 in words is "six billion, four hundred ten million, nine hundred forty thousand, eight hundred sixty-one".