699964 has 6 divisors (see below), whose sum is σ = 1224944. Its totient is φ = 349980.

The previous prime is 699961. The next prime is 699967. The reversal of 699964 is 469996.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (699961) and next prime (699967).

It is a self number, because there is not a number n which added to its sum of digits gives 699964.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 87492 + ... + 87499.

2⁶⁹⁹⁹⁶⁴ is an apocalyptic number.

It is an amenable number.

699964 is a deficient number, since it is larger than the sum of its proper divisors (524980).

699964 is a wasteful number, since it uses less digits than its factorization.

699964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 174995 (or 174993 counting only the distinct ones).

The product of its digits is 104976, while the sum is 43.

The square root of 699964 is about 836.6385121425. The cubic root of 699964 is about 88.7888780270.

Adding to 699964 its sum of digits (43), we get a palindrome (700007).

The spelling of 699964 in words is "six hundred ninety-nine thousand, nine hundred sixty-four".