740721560 has 16 divisors (see below), whose sum is σ = 1666623600. Its totient is φ = 296288608.

The previous prime is 740721559. The next prime is 740721613. The reversal of 740721560 is 65127047.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 9258980 + ... + 9259059.

It is an arithmetic number, because the mean of its divisors is an integer number (104163975).

Almost surely, 2^740721560 is an apocalyptic number.

It is an amenable number.

740721560 is an abundant number, since it is smaller than the sum of its proper divisors (925902040).

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

740721560 is a wasteful number, since it uses less digits than its factorization.

740721560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18518050 (or 18518046 counting only the distinct ones).

The product of its (nonzero) digits is 11760, while the sum is 32.

The square root of 740721560 is about 27216.2003226020. The cubic root of 740721560 is about 904.7980624498.

The spelling of 740721560 in words is "seven hundred forty million, seven hundred twenty-one thousand, five hundred sixty".