699671 has 12 divisors (see below), whose sum is σ = 827640. Its totient is φ = 589680.

The previous prime is 699649. The next prime is 699697. The reversal of 699671 is 176996.

It is not a de Polignac number, because 699671 - 2¹⁸ = 437527 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 (699631) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5276 + ... + 5406.

It is an arithmetic number, because the mean of its divisors is an integer number (68970).

2⁶⁹⁹⁶⁷¹ is an apocalyptic number.

699671 is a deficient number, since it is larger than the sum of its proper divisors (127969).

699671 is a wasteful number, since it uses less digits than its factorization.

699671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254 (or 247 counting only the distinct ones).

The product of its digits is 20412, while the sum is 38.

The square root of 699671 is about 836.4633883201. The cubic root of 699671 is about 88.7764874984.

The spelling of 699671 in words is "six hundred ninety-nine thousand, six hundred seventy-one".