8408562261 has 32 divisors (see below), whose sum is σ = 12308889600. Its totient is φ = 5063609280.

The previous prime is 8408562259. The next prime is 8408562269. The reversal of 8408562261 is 1622658048.

It is not a de Polignac number, because 8408562261 - 2¹ = 8408562259 is a prime.

It is a super-2 number, since 2×8408562261² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8408562269) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3754380 + ... + 3756618.

It is an arithmetic number, because the mean of its divisors is an integer number (384652800).

Almost surely, 2^8408562261 is an apocalyptic number.

It is an amenable number.

8408562261 is a deficient number, since it is larger than the sum of its proper divisors (3900327339).

8408562261 is a wasteful number, since it uses less digits than its factorization.

8408562261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2929.

The product of its (nonzero) digits is 184320, while the sum is 42.

The square root of 8408562261 is about 91698.2129651391. The cubic root of 8408562261 is about 2033.4831656647.

The spelling of 8408562261 in words is "eight billion, four hundred eight million, five hundred sixty-two thousand, two hundred sixty-one".