720166230 has 192 divisors, whose sum is σ = 2240784000. Its totient is φ = 160312320.

The previous prime is 720166211. The next prime is 720166247. The reversal of 720166230 is 32661027.

It is a happy number.

720166230 is a `hidden beast` number, since 7 + 20 + 16 + 623 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 720166194 and 720166203.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1265386 + ... + 1265954.

It is an arithmetic number, because the mean of its divisors is an integer number (11670750).

Almost surely, 2^720166230 is an apocalyptic number.

720166230 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 720166230, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1120392000).

720166230 is an abundant number, since it is smaller than the sum of its proper divisors (1520617770).

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

720166230 is a wasteful number, since it uses less digits than its factorization.

720166230 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644 (or 627 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 27.

The square root of 720166230 is about 26835.9130643994. The cubic root of 720166230 is about 896.3499202919.

The spelling of 720166230 in words is "seven hundred twenty million, one hundred sixty-six thousand, two hundred thirty".