726990 has 32 divisors (see below), whose sum is σ = 1904256. Its totient is φ = 176160.

The previous prime is 726989. The next prime is 726991. The reversal of 726990 is 99627.

It is an interprime number because it is at equal distance from previous prime (726989) and next prime (726991).

It is a Harshad number since it is a multiple of its sum of digits (33).

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 726990.

It is not an unprimeable number, because it can be changed into a prime (726991) 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, 772 + ... + 1431.

It is an arithmetic number, because the mean of its divisors is an integer number (59508).

2⁷²⁶⁹⁹⁰ is an apocalyptic number.

726990 is an abundant number, since it is smaller than the sum of its proper divisors (1177266).

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

726990 is a wasteful number, since it uses less digits than its factorization.

726990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2224.

The product of its (nonzero) digits is 6804, while the sum is 33.

The square root of 726990 is about 852.6370857522. The cubic root of 726990 is about 89.9172078123.

The spelling of 726990 in words is "seven hundred twenty-six thousand, nine hundred ninety".