747667685 has 4 divisors (see below), whose sum is σ = 897201228. Its totient is φ = 598134144.

The previous prime is 747667631. The next prime is 747667691. The reversal of 747667685 is 586766747.

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

It can be written as a sum of positive squares in 2 ways, for example, as 544148929 + 203518756 = 23327^2 + 14266^2 .

It is a cyclic number.

It is not a de Polignac number, because 747667685 - 2¹² = 747663589 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 747667685.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74766764 + ... + 74766773.

It is an arithmetic number, because the mean of its divisors is an integer number (224300307).

Almost surely, 2^747667685 is an apocalyptic number.

It is an amenable number.

747667685 is a deficient number, since it is larger than the sum of its proper divisors (149533543).

747667685 is a wasteful number, since it uses less digits than its factorization.

747667685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 149533542.

The product of its digits is 11854080, while the sum is 56.

The square root of 747667685 is about 27343.5126675415. The cubic root of 747667685 is about 907.6175190012.

The spelling of 747667685 in words is "seven hundred forty-seven million, six hundred sixty-seven thousand, six hundred eighty-five".