747712 has 28 divisors (see below), whose sum is σ = 1696720. Its totient is φ = 320256.

The previous prime is 747679. The next prime is 747713. The reversal of 747712 is 217747.

It is a tau number, because it is divible by the number of its divisors (28).

It is a Harshad number since it is a multiple of its sum of digits (28).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (747713) by changing a digit.

747712 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 387 + ... + 1282.

2⁷⁴⁷⁷¹² is an apocalyptic number.

It is an amenable number.

747712 is an abundant number, since it is smaller than the sum of its proper divisors (949008).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

747712 is a wasteful number, since it uses less digits than its factorization.

747712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1688 (or 1678 counting only the distinct ones).

The product of its digits is 2744, while the sum is 28.

The square root of 747712 is about 864.7034173634. The cubic root of 747712 is about 90.7635450442.

The spelling of 747712 in words is "seven hundred forty-seven thousand, seven hundred twelve", and thus it is an iban number.