785197140 has 192 divisors, whose sum is σ = 2793799680. Its totient is φ = 160289280.

The previous prime is 785197117. The next prime is 785197163. The reversal of 785197140 is 41791587.

It is an interprime number because it is at equal distance from previous prime (785197117) and next prime (785197163).

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 785197092 and 785197101.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 166941 + ... + 171579.

It is an arithmetic number, because the mean of its divisors is an integer number (14551040).

Almost surely, 2^785197140 is an apocalyptic number.

785197140 is a gapful number since it is divisible by the number (70) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 785197140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1396899840).

785197140 is an abundant number, since it is smaller than the sum of its proper divisors (2008602540).

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

785197140 is a wasteful number, since it uses less digits than its factorization.

785197140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4702 (or 4700 counting only the distinct ones).

The product of its (nonzero) digits is 70560, while the sum is 42.

The square root of 785197140 is about 28021.3693455548. The cubic root of 785197140 is about 922.5563511673.

The spelling of 785197140 in words is "seven hundred eighty-five million, one hundred ninety-seven thousand, one hundred forty".