699999667 has 8 divisors (see below), whose sum is σ = 742471056. Its totient is φ = 657672192.

The previous prime is 699999637. The next prime is 699999689. The reversal of 699999667 is 766999996.

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 699999667 - 2²⁷ = 565781939 is a prime.

It is a super-2 number, since 2×699999667² = 979999067600221778, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 699999596 and 699999605.

It is not an unprimeable number, because it can be changed into a prime (699999617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25873 + ... + 45490.

It is an arithmetic number, because the mean of its divisors is an integer number (92808882).

Almost surely, 2^699999667 is an apocalyptic number.

699999667 is a deficient number, since it is larger than the sum of its proper divisors (42471389).

699999667 is a wasteful number, since it uses less digits than its factorization.

699999667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71957.

The product of its digits is 89282088, while the sum is 70.

The square root of 699999667 is about 26457.5068175367. The cubic root of 699999667 is about 887.9038609464.

The spelling of 699999667 in words is "six hundred ninety-nine million, nine hundred ninety-nine thousand, six hundred sixty-seven".