720098 has 4 divisors (see below), whose sum is σ = 1080150. Its totient is φ = 360048.

The previous prime is 720091. The next prime is 720101. The reversal of 720098 is 890027.

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

It can be written as a sum of positive squares in only one way, i.e., 368449 + 351649 = 607^2 + 593^2 .

It is a super-2 number, since 2×720098² = 1037082259208, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (720091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 180023 + ... + 180026.

2⁷²⁰⁰⁹⁸ is an apocalyptic number.

720098 is a deficient number, since it is larger than the sum of its proper divisors (360052).

720098 is a wasteful number, since it uses less digits than its factorization.

720098 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360051.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 720098 is about 848.5858825128. The cubic root of 720098 is about 89.6321612065.

It can be divided in two parts, 7200 and 98, that multiplied together give a square (705600 = 840²).

The spelling of 720098 in words is "seven hundred twenty thousand, ninety-eight".