775213307 has 8 divisors (see below), whose sum is σ = 868544112. Its totient is φ = 685692000.

The previous prime is 775213303. The next prime is 775213343. The reversal of 775213307 is 703312577.

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

It is a cyclic number.

It is not a de Polignac number, because 775213307 - 2² = 775213303 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (775213303) by changing a digit.

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, 951944 + ... + 952757.

It is an arithmetic number, because the mean of its divisors is an integer number (108568014).

Almost surely, 2^775213307 is an apocalyptic number.

775213307 is a deficient number, since it is larger than the sum of its proper divisors (93330805).

775213307 is a wasteful number, since it uses less digits than its factorization.

775213307 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1904749.

The product of its (nonzero) digits is 30870, while the sum is 35.

The square root of 775213307 is about 27842.6526573888. The cubic root of 775213307 is about 918.6295391636.

The spelling of 775213307 in words is "seven hundred seventy-five million, two hundred thirteen thousand, three hundred seven".