747855 has 12 divisors (see below), whose sum is σ = 1296360. Its totient is φ = 398832.

The previous prime is 747853. The next prime is 747863. The reversal of 747855 is 558747.

It is not a de Polignac number, because 747855 - 2¹ = 747853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (747853) 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, 8265 + ... + 8354.

It is an arithmetic number, because the mean of its divisors is an integer number (108030).

2⁷⁴⁷⁸⁵⁵ is an apocalyptic number.

747855 is a deficient number, since it is larger than the sum of its proper divisors (548505).

747855 is a wasteful number, since it uses less digits than its factorization.

747855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16630 (or 16627 counting only the distinct ones).

The product of its digits is 39200, while the sum is 36.

The square root of 747855 is about 864.7861007209. The cubic root of 747855 is about 90.7693308546.

The spelling of 747855 in words is "seven hundred forty-seven thousand, eight hundred fifty-five".