699045 has 16 divisors (see below), whose sum is σ = 1157760. Its totient is φ = 359744.

The previous prime is 699037. The next prime is 699053. The reversal of 699045 is 540996.

699045 = 80² + 81² + ... + 137².

It is a happy number.

699045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (699037) and next prime (699053).

It is a cyclic number.

It is not a de Polignac number, because 699045 - 2³ = 699037 is a prime.

It is a Smith number, since the sum of its digits (33) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Curzon number.

It is a nialpdrome in base 4 and base 16.

It is a zygodrome in base 4.

It is a junction number, because it is equal to n+sod(n) for n = 698997 and 699015.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 699045.

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, 369 + ... + 1238.

It is an arithmetic number, because the mean of its divisors is an integer number (72360).

2⁶⁹⁹⁰⁴⁵ is an apocalyptic number.

It is an amenable number.

699045 is a deficient number, since it is larger than the sum of its proper divisors (458715).

699045 is a wasteful number, since it uses less digits than its factorization.

699045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1644.

The product of its (nonzero) digits is 9720, while the sum is 33.

The square root of 699045 is about 836.0891100834. The cubic root of 699045 is about 88.7500033062.

The spelling of 699045 in words is "six hundred ninety-nine thousand, forty-five".