690516 has 18 divisors (see below), whose sum is σ = 1745562. Its totient is φ = 230160.

The previous prime is 690511. The next prime is 690533. The reversal of 690516 is 615096.

It can be written as a sum of positive squares in only one way, i.e., 646416 + 44100 = 804^2 + 210^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a self number, because there is not a number n which added to its sum of digits gives 690516.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 690516.

It is not an unprimeable number, because it can be changed into a prime (690511) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 9555 + ... + 9626.

2⁶⁹⁰⁵¹⁶ is an apocalyptic number.

It is an amenable number.

690516 is an abundant number, since it is smaller than the sum of its proper divisors (1055046).

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

690516 is a wasteful number, since it uses less digits than its factorization.

690516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19191 (or 19186 counting only the distinct ones).

The product of its (nonzero) digits is 1620, while the sum is 27.

The square root of 690516 is about 830.9729237466. The cubic root of 690516 is about 88.3875810922.

The spelling of 690516 in words is "six hundred ninety thousand, five hundred sixteen".