720150690 has 64 divisors (see below), whose sum is σ = 1984103424. Its totient is φ = 163869888.

The previous prime is 720150671. The next prime is 720150701. The reversal of 720150690 is 96051027.

It is a super-2 number, since 2×720150690² = 1037234032614952200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 40117 + ... + 55223.

It is an arithmetic number, because the mean of its divisors is an integer number (31001616).

Almost surely, 2^720150690 is an apocalyptic number.

720150690 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 720150690, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (992051712).

720150690 is an abundant number, since it is smaller than the sum of its proper divisors (1263952734).

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

720150690 is a wasteful number, since it uses less digits than its factorization.

720150690 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15351.

The product of its (nonzero) digits is 3780, while the sum is 30.

The square root of 720150690 is about 26835.6235254559. The cubic root of 720150690 is about 896.3434729943.

The spelling of 720150690 in words is "seven hundred twenty million, one hundred fifty thousand, six hundred ninety".