785379561 has 8 divisors (see below), whose sum is σ = 1062802464. Its totient is φ = 515771520.

The previous prime is 785379533. The next prime is 785379577. The reversal of 785379561 is 165973587.

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

It is not a de Polignac number, because 785379561 - 2¹¹ = 785377513 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (785379461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1953480 + ... + 1953881.

It is an arithmetic number, because the mean of its divisors is an integer number (132850308).

Almost surely, 2^785379561 is an apocalyptic number.

It is an amenable number.

785379561 is a deficient number, since it is larger than the sum of its proper divisors (277422903).

785379561 is a wasteful number, since it uses less digits than its factorization.

785379561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3907431.

The product of its digits is 1587600, while the sum is 51.

The square root of 785379561 is about 28024.6241901653. The cubic root of 785379561 is about 922.6277899658.

The spelling of 785379561 in words is "seven hundred eighty-five million, three hundred seventy-nine thousand, five hundred sixty-one".