6999755 has 16 divisors (see below), whose sum is σ = 9825024. Its totient is φ = 4687200.

The previous prime is 6999749. The next prime is 6999781. The reversal of 6999755 is 5579996.

It is not a de Polignac number, because 6999755 - 2¹⁸ = 6737611 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 821 + ... + 3830.

It is an arithmetic number, because the mean of its divisors is an integer number (614064).

Almost surely, 2^6999755 is an apocalyptic number.

6999755 is a deficient number, since it is larger than the sum of its proper divisors (2825269).

6999755 is a wasteful number, since it uses less digits than its factorization.

6999755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4706.

The product of its digits is 765450, while the sum is 50.

The square root of 6999755 is about 2645.7050100115. The cubic root of 6999755 is about 191.2908864982.

The spelling of 6999755 in words is "six million, nine hundred ninety-nine thousand, seven hundred fifty-five".