561424765 has 8 divisors (see below), whose sum is σ = 734956128. Its totient is φ = 408308880.

The previous prime is 561424723. The next prime is 561424781. The reversal of 561424765 is 567424165.

It is a happy number.

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

It is not a de Polignac number, because 561424765 - 2⁷ = 561424637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 5103807 + ... + 5103916.

It is an arithmetic number, because the mean of its divisors is an integer number (91869516).

Almost surely, 2^561424765 is an apocalyptic number.

561424765 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

561424765 is a deficient number, since it is larger than the sum of its proper divisors (173531363).

561424765 is a wasteful number, since it uses less digits than its factorization.

561424765 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10207739.

The product of its digits is 201600, while the sum is 40.

The square root of 561424765 is about 23694.4036641566. The cubic root of 561424765 is about 824.9554992832.

The spelling of 561424765 in words is "five hundred sixty-one million, four hundred twenty-four thousand, seven hundred sixty-five".