807424561 has 4 divisors (see below), whose sum is σ = 807790324. Its totient is φ = 807058800.

The previous prime is 807424549. The next prime is 807424573. The reversal of 807424561 is 165424708.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (807424549) and next prime (807424573).

It can be written as a sum of positive squares in 2 ways, for example, as 589566961 + 217857600 = 24281^2 + 14760^2 .

It is a cyclic number.

It is not a de Polignac number, because 807424561 - 2¹³ = 807416369 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 807424561.

It is not an unprimeable number, because it can be changed into a prime (807424661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 179550 + ... + 183991.

It is an arithmetic number, because the mean of its divisors is an integer number (201947581).

Almost surely, 2^807424561 is an apocalyptic number.

It is an amenable number.

807424561 is a deficient number, since it is larger than the sum of its proper divisors (365763).

807424561 is a wasteful number, since it uses less digits than its factorization.

807424561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 365762.

The product of its (nonzero) digits is 53760, while the sum is 37.

The square root of 807424561 is about 28415.2170676207. The cubic root of 807424561 is about 931.1807413862.

The spelling of 807424561 in words is "eight hundred seven million, four hundred twenty-four thousand, five hundred sixty-one".