699940 has 24 divisors (see below), whose sum is σ = 1491840. Its totient is φ = 275808.

The previous prime is 699931. The next prime is 699943. The reversal of 699940 is 49996.

It is a self number, because there is not a number n which added to its sum of digits gives 699940.

It is not an unprimeable number, because it can be changed into a prime (699943) 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, 1359 + ... + 1801.

It is an arithmetic number, because the mean of its divisors is an integer number (62160).

2⁶⁹⁹⁹⁴⁰ is an apocalyptic number.

It is an amenable number.

699940 is an abundant number, since it is smaller than the sum of its proper divisors (791900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

699940 is a wasteful number, since it uses less digits than its factorization.

699940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531 (or 529 counting only the distinct ones).

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 699940 is about 836.6241689074. The cubic root of 699940 is about 88.7878632332.

The spelling of 699940 in words is "six hundred ninety-nine thousand, nine hundred forty".