740081555 has 4 divisors (see below), whose sum is σ = 888097872. Its totient is φ = 592065240.

The previous prime is 740081539. The next prime is 740081561. The reversal of 740081555 is 555180047.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 740081555 - 2⁴ = 740081539 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74008151 + ... + 74008160.

It is an arithmetic number, because the mean of its divisors is an integer number (222024468).

Almost surely, 2^740081555 is an apocalyptic number.

740081555 is a deficient number, since it is larger than the sum of its proper divisors (148016317).

740081555 is a wasteful number, since it uses less digits than its factorization.

740081555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148016316.

The product of its (nonzero) digits is 28000, while the sum is 35.

The square root of 740081555 is about 27204.4399868845. The cubic root of 740081555 is about 904.5373967356.

The spelling of 740081555 in words is "seven hundred forty million, eighty-one thousand, five hundred fifty-five".