719287668 has 96 divisors (see below), whose sum is σ = 2100080640. Its totient is φ = 210924000.

The previous prime is 719287607. The next prime is 719287669. The reversal of 719287668 is 866782917.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (719287669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 27063 + ... + 46593.

It is an arithmetic number, because the mean of its divisors is an integer number (21875840).

Almost surely, 2^719287668 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 719287668, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1050040320).

719287668 is an abundant number, since it is smaller than the sum of its proper divisors (1380792972).

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

719287668 is a wasteful number, since it uses less digits than its factorization.

719287668 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19586 (or 19578 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 719287668 is about 26819.5389222112. The cubic root of 719287668 is about 895.9852732619.

The spelling of 719287668 in words is "seven hundred nineteen million, two hundred eighty-seven thousand, six hundred sixty-eight".