727676640 has 144 divisors (see below), whose sum is σ = 2563456896. Its totient is φ = 187776000.

The previous prime is 727676639. The next prime is 727676683. The reversal of 727676640 is 46676727.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 36490 + ... + 52790.

It is an arithmetic number, because the mean of its divisors is an integer number (17801784).

Almost surely, 2^727676640 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 727676640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1281728448).

727676640 is an abundant number, since it is smaller than the sum of its proper divisors (1835780256).

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

727676640 is a wasteful number, since it uses less digits than its factorization.

727676640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16353 (or 16342 counting only the distinct ones).

The product of its (nonzero) digits is 592704, while the sum is 45.

The square root of 727676640 is about 26975.4822014362. The cubic root of 727676640 is about 899.4550775401.

The spelling of 727676640 in words is "seven hundred twenty-seven million, six hundred seventy-six thousand, six hundred forty".