699965 has 12 divisors (see below), whose sum is σ = 977436. Its totient is φ = 479808.

The previous prime is 699961. The next prime is 699967. The reversal of 699965 is 569996.

It can be written as a sum of positive squares in 2 ways, for example, as 362404 + 337561 = 602^2 + 581^2 .

It is not a de Polignac number, because 699965 - 2² = 699961 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699961) 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, 1184 + ... + 1673.

It is an arithmetic number, because the mean of its divisors is an integer number (81453).

2⁶⁹⁹⁹⁶⁵ is an apocalyptic number.

It is an amenable number.

699965 is a deficient number, since it is larger than the sum of its proper divisors (277471).

699965 is a wasteful number, since it uses less digits than its factorization.

699965 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2876 (or 2869 counting only the distinct ones).

The product of its digits is 131220, while the sum is 44.

The square root of 699965 is about 836.6391097719. The cubic root of 699965 is about 88.7889203096.

The spelling of 699965 in words is "six hundred ninety-nine thousand, nine hundred sixty-five".