720227970 has 320 divisors, whose sum is σ = 2468465280. Its totient is φ = 148176000.

The previous prime is 720227969. The next prime is 720227983. The reversal of 720227970 is 79722027.

It is an unprimeable number.

It is a polite number, since it can be written in 159 ways as a sum of consecutive naturals, for example, 7130920 + ... + 7131020.

It is an arithmetic number, because the mean of its divisors is an integer number (7713954).

Almost surely, 2^720227970 is an apocalyptic number.

720227970 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 720227970, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1234232640).

720227970 is an abundant number, since it is smaller than the sum of its proper divisors (1748237310).

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

720227970 is a wasteful number, since it uses less digits than its factorization.

720227970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 156 (or 129 counting only the distinct ones).

The product of its (nonzero) digits is 24696, while the sum is 36.

The square root of 720227970 is about 26837.0633639376. The cubic root of 720227970 is about 896.3755343147.

Adding to 720227970 its reverse (79722027), we get a palindrome (799949997).

The spelling of 720227970 in words is "seven hundred twenty million, two hundred twenty-seven thousand, nine hundred seventy".