730749985 has 36 divisors (see below), whose sum is σ = 1033943292. Its totient is φ = 494355456.

The previous prime is 730749983. The next prime is 730749989. The reversal of 730749985 is 589947037.

It can be written as a sum of positive squares in 6 ways, for example, as 108347281 + 622402704 = 10409^2 + 24948^2 .

It is not a de Polignac number, because 730749985 - 2¹ = 730749983 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730749983) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2305047 + ... + 2305363.

It is an arithmetic number, because the mean of its divisors is an integer number (28720647).

Almost surely, 2^730749985 is an apocalyptic number.

It is an amenable number.

730749985 is a deficient number, since it is larger than the sum of its proper divisors (303193307).

730749985 is an equidigital number, since it uses as much as digits as its factorization.

730749985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 530 (or 426 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 52.

The square root of 730749985 is about 27032.3877043816. The cubic root of 730749985 is about 900.7195829500.

The spelling of 730749985 in words is "seven hundred thirty million, seven hundred forty-nine thousand, nine hundred eighty-five".