747868 has 24 divisors (see below), whose sum is σ = 1491840. Its totient is φ = 324720.

The previous prime is 747863. The next prime is 747869. The reversal of 747868 is 868747.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 747868.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747863) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 643 + ... + 1381.

It is an arithmetic number, because the mean of its divisors is an integer number (62160).

2⁷⁴⁷⁸⁶⁸ is an apocalyptic number.

It is an amenable number.

747868 is a deficient number, since it is larger than the sum of its proper divisors (743972).

747868 is a wasteful number, since it uses less digits than its factorization.

747868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777 (or 775 counting only the distinct ones).

The product of its digits is 75264, while the sum is 40.

The square root of 747868 is about 864.7936169977. The cubic root of 747868 is about 90.7698568008.

The spelling of 747868 in words is "seven hundred forty-seven thousand, eight hundred sixty-eight".