747891 has 12 divisors (see below), whose sum is σ = 1127568. Its totient is φ = 476784.

The previous prime is 747889. The next prime is 747917. The reversal of 747891 is 198747.

It is not a de Polignac number, because 747891 - 2¹ = 747889 is a prime.

It is a plaindrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (747811) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1600 + ... + 2013.

It is an arithmetic number, because the mean of its divisors is an integer number (93964).

2⁷⁴⁷⁸⁹¹ is an apocalyptic number.

747891 is a deficient number, since it is larger than the sum of its proper divisors (379677).

747891 is a wasteful number, since it uses less digits than its factorization.

747891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3642 (or 3639 counting only the distinct ones).

The product of its digits is 14112, while the sum is 36.

The square root of 747891 is about 864.8069148660. The cubic root of 747891 is about 90.7707873060.

It can be divided in two parts, 7478 and 91, that added together give a square (7569 = 87²).

The spelling of 747891 in words is "seven hundred forty-seven thousand, eight hundred ninety-one".