561420705 has 8 divisors (see below), whose sum is σ = 898273152. Its totient is φ = 299424368.

The previous prime is 561420703. The next prime is 561420707. The reversal of 561420705 is 507024165.

It is an interprime number because it is at equal distance from previous prime (561420703) and next prime (561420707).

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

It is a cyclic number.

It is not a de Polignac number, because 561420705 - 2¹ = 561420703 is a prime.

It is not an unprimeable number, because it can be changed into a prime (561420701) 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, 18714009 + ... + 18714038.

It is an arithmetic number, because the mean of its divisors is an integer number (112284144).

Almost surely, 2^561420705 is an apocalyptic number.

It is an amenable number.

561420705 is a deficient number, since it is larger than the sum of its proper divisors (336852447).

561420705 is a wasteful number, since it uses less digits than its factorization.

561420705 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37428055.

The product of its (nonzero) digits is 8400, while the sum is 30.

The square root of 561420705 is about 23694.3179897629. The cubic root of 561420705 is about 824.9535106953.

The spelling of 561420705 in words is "five hundred sixty-one million, four hundred twenty thousand, seven hundred five".