727046640 has 60 divisors (see below), whose sum is σ = 2441667384. Its totient is φ = 193878912.

The previous prime is 727046569. The next prime is 727046641. The reversal of 727046640 is 46640727.

727046640 is a `hidden beast` number, since 7 + 2 + 7 + 0 + 4 + 6 + 640 = 666.

It is a tau number, because it is divible by the number of its divisors (60).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 727046595 and 727046604.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (727046641) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 504174 + ... + 505613.

Almost surely, 2^727046640 is an apocalyptic number.

It is an amenable number.

727046640 is an abundant number, since it is smaller than the sum of its proper divisors (1714620744).

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

727046640 is a wasteful number, since it uses less digits than its factorization.

727046640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1009806 (or 1009797 counting only the distinct ones).

The product of its (nonzero) digits is 56448, while the sum is 36.

The square root of 727046640 is about 26963.8024024803. The cubic root of 727046640 is about 899.1954291021.

The spelling of 727046640 in words is "seven hundred twenty-seven million, forty-six thousand, six hundred forty".