786536730 has 320 divisors, whose sum is σ = 2613600000. Its totient is φ = 169174656.

The previous prime is 786536677. The next prime is 786536747. The reversal of 786536730 is 37635687.

786536730 is a `hidden beast` number, since 7 + 86 + 536 + 7 + 30 = 666.

786536730 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

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, 5278696 + ... + 5278844.

It is an arithmetic number, because the mean of its divisors is an integer number (8167500).

Almost surely, 2^786536730 is an apocalyptic number.

786536730 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 786536730, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1306800000).

786536730 is an abundant number, since it is smaller than the sum of its proper divisors (1827063270).

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

786536730 is a wasteful number, since it uses less digits than its factorization.

786536730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 208 (or 185 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 45.

The square root of 786536730 is about 28045.2621667190. The cubic root of 786536730 is about 923.0806972442.

The spelling of 786536730 in words is "seven hundred eighty-six million, five hundred thirty-six thousand, seven hundred thirty".