740720856 has 32 divisors (see below), whose sum is σ = 1852646400. Its totient is φ = 246794400.

The previous prime is 740720843. The next prime is 740720857. The reversal of 740720856 is 658027047.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (740720857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 59581 + ... + 70931.

It is an arithmetic number, because the mean of its divisors is an integer number (57895200).

Almost surely, 2^740720856 is an apocalyptic number.

It is an amenable number.

740720856 is an abundant number, since it is smaller than the sum of its proper divisors (1111925544).

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

740720856 is a wasteful number, since it uses less digits than its factorization.

740720856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14079 (or 14075 counting only the distinct ones).

The product of its (nonzero) digits is 94080, while the sum is 39.

The square root of 740720856 is about 27216.1873891256. The cubic root of 740720856 is about 904.7977758023.

The spelling of 740720856 in words is "seven hundred forty million, seven hundred twenty thousand, eight hundred fifty-six".