785561493 has 4 divisors (see below), whose sum is σ = 1047415328. Its totient is φ = 523707660.

The previous prime is 785561489. The next prime is 785561503. The reversal of 785561493 is 394165587.

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 not a de Polignac number, because 785561493 - 2² = 785561489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (785561473) 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, 130926913 + ... + 130926918.

It is an arithmetic number, because the mean of its divisors is an integer number (261853832).

Almost surely, 2^785561493 is an apocalyptic number.

It is an amenable number.

785561493 is a deficient number, since it is larger than the sum of its proper divisors (261853835).

785561493 is a wasteful number, since it uses less digits than its factorization.

785561493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 261853834.

The product of its digits is 907200, while the sum is 48.

The square root of 785561493 is about 28027.8699333360. The cubic root of 785561493 is about 922.6990262478.

The spelling of 785561493 in words is "seven hundred eighty-five million, five hundred sixty-one thousand, four hundred ninety-three".