699000669 has 6 divisors (see below), whose sum is σ = 1009667646. Its totient is φ = 466000440.

The previous prime is 699000667. The next prime is 699000683. The reversal of 699000669 is 966000996.

It can be written as a sum of positive squares in only one way, i.e., 546156900 + 152843769 = 23370^2 + 12363^2 .

It is not a de Polignac number, because 699000669 - 2¹ = 699000667 is a prime.

It is a super-2 number, since 2×699000669² = 977203870524895122, which contains 22 as substring.

699000669 is a strobogrammatic number because it is the same when read upside-down.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (699000667) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 38833362 + ... + 38833379.

It is an arithmetic number, because the mean of its divisors is an integer number (168277941).

Almost surely, 2^699000669 is an apocalyptic number.

It is an amenable number.

699000669 is a deficient number, since it is larger than the sum of its proper divisors (310666977).

699000669 is a wasteful number, since it uses less digits than its factorization.

699000669 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77666747 (or 77666744 counting only the distinct ones).

The product of its (nonzero) digits is 157464, while the sum is 45.

The square root of 699000669 is about 26438.6207847535. The cubic root of 699000669 is about 887.4812719449.

The spelling of 699000669 in words is "six hundred ninety-nine million, six hundred sixty-nine", and thus it is an aban number.