690763 has 4 divisors (see below), whose sum is σ = 696168. Its totient is φ = 685360.

The previous prime is 690757. The next prime is 690787. The reversal of 690763 is 367096.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-690763 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (690793) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2506 + ... + 2767.

It is an arithmetic number, because the mean of its divisors is an integer number (174042).

2⁶⁹⁰⁷⁶³ is an apocalyptic number.

690763 is a deficient number, since it is larger than the sum of its proper divisors (5405).

690763 is a wasteful number, since it uses less digits than its factorization.

690763 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5404.

The product of its (nonzero) digits is 6804, while the sum is 31.

The square root of 690763 is about 831.1215314261. The cubic root of 690763 is about 88.3981186854.

The spelling of 690763 in words is "six hundred ninety thousand, seven hundred sixty-three".