6406961379 has 16 divisors (see below), whose sum is σ = 10513988352. Its totient is φ = 3379495968.

The previous prime is 6406961371. The next prime is 6406961381. The reversal of 6406961379 is 9731696046.

It is not a de Polignac number, because 6406961379 - 2³ = 6406961371 is a prime.

It is a super-2 number, since 2×6406961379² = 82098308223995163282, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (6406961371) 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, 11734089 + ... + 11734634.

It is an arithmetic number, because the mean of its divisors is an integer number (657124272).

Almost surely, 2^6406961379 is an apocalyptic number.

6406961379 is a deficient number, since it is larger than the sum of its proper divisors (4107026973).

6406961379 is a wasteful number, since it uses less digits than its factorization.

6406961379 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23468746.

The product of its (nonzero) digits is 1469664, while the sum is 51.

The square root of 6406961379 is about 80043.4967939307. The cubic root of 6406961379 is about 1857.3084532521.

The spelling of 6406961379 in words is "six billion, four hundred six million, nine hundred sixty-one thousand, three hundred seventy-nine".