690952 has 8 divisors (see below), whose sum is σ = 1295550. Its totient is φ = 345472.

The previous prime is 690929. The next prime is 690953. The reversal of 690952 is 259096.

It can be written as a sum of positive squares in only one way, i.e., 630436 + 60516 = 794^2 + 246^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (690953) by changing a digit.

690952 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43177 + ... + 43192.

2⁶⁹⁰⁹⁵² is an apocalyptic number.

It is an amenable number.

690952 is a deficient number, since it is larger than the sum of its proper divisors (604598).

690952 is a wasteful number, since it uses less digits than its factorization.

690952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86375 (or 86371 counting only the distinct ones).

The product of its (nonzero) digits is 4860, while the sum is 31.

The square root of 690952 is about 831.2352254326. The cubic root of 690952 is about 88.4061801676.

The spelling of 690952 in words is "six hundred ninety thousand, nine hundred fifty-two".