785627561 has 4 divisors (see below), whose sum is σ = 826976400. Its totient is φ = 744278724.

The previous prime is 785627519. The next prime is 785627597. The reversal of 785627561 is 165726587.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 785627561 - 2⁶ = 785627497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (785677561) 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, 20674391 + ... + 20674428.

It is an arithmetic number, because the mean of its divisors is an integer number (206744100).

Almost surely, 2^785627561 is an apocalyptic number.

It is an amenable number.

785627561 is a deficient number, since it is larger than the sum of its proper divisors (41348839).

785627561 is a wasteful number, since it uses less digits than its factorization.

785627561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41348838.

The product of its digits is 705600, while the sum is 47.

The square root of 785627561 is about 28029.0485211325. The cubic root of 785627561 is about 922.7248927441.

The spelling of 785627561 in words is "seven hundred eighty-five million, six hundred twenty-seven thousand, five hundred sixty-one".