6406292561 has 8 divisors (see below), whose sum is σ = 6418782048. Its totient is φ = 6393816000.

The previous prime is 6406292513. The next prime is 6406292579. The reversal of 6406292561 is 1652926046.

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 a de Polignac number, because none of the positive numbers 2^k-6406292561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6406292261) 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, 2051081 + ... + 2054201.

It is an arithmetic number, because the mean of its divisors is an integer number (802347756).

Almost surely, 2^6406292561 is an apocalyptic number.

It is an amenable number.

6406292561 is a deficient number, since it is larger than the sum of its proper divisors (12489487).

6406292561 is a wasteful number, since it uses less digits than its factorization.

6406292561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6463.

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 6406292561 is about 80039.3188439282. The cubic root of 6406292561 is about 1857.2438233141.

The spelling of 6406292561 in words is "six billion, four hundred six million, two hundred ninety-two thousand, five hundred sixty-one".