727473649 has 12 divisors (see below), whose sum is σ = 847892784. Its totient is φ = 622334664.

The previous prime is 727473631. The next prime is 727473679. The reversal of 727473649 is 946374727.

It is not a de Polignac number, because 727473649 - 2⁹ = 727473137 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (727473679) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11434 + ... + 39820.

It is an arithmetic number, because the mean of its divisors is an integer number (70657732).

Almost surely, 2^727473649 is an apocalyptic number.

It is an amenable number.

727473649 is a deficient number, since it is larger than the sum of its proper divisors (120419135).

727473649 is a wasteful number, since it uses less digits than its factorization.

727473649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28924 (or 28917 counting only the distinct ones).

The product of its digits is 1778112, while the sum is 49.

The square root of 727473649 is about 26971.7194298028. The cubic root of 727473649 is about 899.3714331228.

The spelling of 727473649 in words is "seven hundred twenty-seven million, four hundred seventy-three thousand, six hundred forty-nine".