690264 has 24 divisors (see below), whose sum is σ = 1869660. Its totient is φ = 230064.

The previous prime is 690259. The next prime is 690269. The reversal of 690264 is 462096.

It is an interprime number because it is at equal distance from previous prime (690259) and next prime (690269).

It is a tau number, because it is divible by the number of its divisors (24).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690269) by changing a digit.

690264 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 in 5 ways as a sum of consecutive naturals, for example, 4722 + ... + 4865.

2⁶⁹⁰²⁶⁴ is an apocalyptic number.

It is an amenable number.

690264 is an abundant number, since it is smaller than the sum of its proper divisors (1179396).

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

690264 is a wasteful number, since it uses less digits than its factorization.

690264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9599 (or 9592 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 690264 is about 830.8212804208. The cubic root of 690264 is about 88.3768275975.

The spelling of 690264 in words is "six hundred ninety thousand, two hundred sixty-four".