561370671 has 12 divisors (see below), whose sum is σ = 815401080. Its totient is φ = 372155280.

The previous prime is 561370669. The next prime is 561370673. The reversal of 561370671 is 176073165.

561370671 is a `hidden beast` number, since 561 + 37 + 0 + 67 + 1 = 666.

It is an interprime number because it is at equal distance from previous prime (561370669) and next prime (561370673).

It is not a de Polignac number, because 561370671 - 2¹ = 561370669 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561370673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 172620 + ... + 175841.

It is an arithmetic number, because the mean of its divisors is an integer number (67950090).

Almost surely, 2^561370671 is an apocalyptic number.

561370671 is a deficient number, since it is larger than the sum of its proper divisors (254030409).

561370671 is a wasteful number, since it uses less digits than its factorization.

561370671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 348646 (or 348643 counting only the distinct ones).

The product of its (nonzero) digits is 26460, while the sum is 36.

The square root of 561370671 is about 23693.2621434871. The cubic root of 561370671 is about 824.9290032568.

The spelling of 561370671 in words is "five hundred sixty-one million, three hundred seventy thousand, six hundred seventy-one".