690726 has 32 divisors (see below), whose sum is σ = 1491840. Its totient is φ = 212544.

The previous prime is 690721. The next prime is 690757. The reversal of 690726 is 627096.

It is a junction number, because it is equal to n+sod(n) for n = 690693 and 690702.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (690721) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8281 + ... + 8363.

It is an arithmetic number, because the mean of its divisors is an integer number (46620).

2⁶⁹⁰⁷²⁶ is an apocalyptic number.

690726 is an abundant number, since it is smaller than the sum of its proper divisors (801114).

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

690726 is a wasteful number, since it uses less digits than its factorization.

690726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180.

The product of its (nonzero) digits is 4536, while the sum is 30.

The square root of 690726 is about 831.0992720488. The cubic root of 690726 is about 88.3965403395.

The spelling of 690726 in words is "six hundred ninety thousand, seven hundred twenty-six".