999755 has 8 divisors (see below), whose sum is σ = 1220400. Its totient is φ = 786016.

The previous prime is 999749. The next prime is 999763. The reversal of 999755 is 557999.

999755 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 999755 - 2⁸ = 999499 is a prime.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1400 + ... + 1989.

It is an arithmetic number, because the mean of its divisors is an integer number (152550).

2⁹⁹⁹⁷⁵⁵ is an apocalyptic number.

999755 is a deficient number, since it is larger than the sum of its proper divisors (220645).

999755 is a wasteful number, since it uses less digits than its factorization.

999755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3453.

The product of its digits is 127575, while the sum is 44.

The square root of 999755 is about 999.8774924960. The cubic root of 999755 is about 99.9918326663.

The spelling of 999755 in words is "nine hundred ninety-nine thousand, seven hundred fifty-five".