728061473 has 2 divisors, whose sum is σ = 728061474. Its totient is φ = 728061472.

The previous prime is 728061461. The next prime is 728061479. The reversal of 728061473 is 374160827.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 446392384 + 281669089 = 21128^2 + 16783^2 .

It is a cyclic number.

It is not a de Polignac number, because 728061473 - 2⁴ = 728061457 is a prime.

It is equal to p_37629506 and since 728061473 and 37629506 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (728061479) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 364030736 + 364030737.

It is an arithmetic number, because the mean of its divisors is an integer number (364030737).

Almost surely, 2^728061473 is an apocalyptic number.

It is an amenable number.

728061473 is a deficient number, since it is larger than the sum of its proper divisors (1).

728061473 is an equidigital number, since it uses as much as digits as its factorization.

728061473 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 56448, while the sum is 38.

The square root of 728061473 is about 26982.6142728980. The cubic root of 728061473 is about 899.6136090342.

The spelling of 728061473 in words is "seven hundred twenty-eight million, sixty-one thousand, four hundred seventy-three".