730649387 has 4 divisors (see below), whose sum is σ = 786853200. Its totient is φ = 674445576.

The previous prime is 730649377. The next prime is 730649401. The reversal of 730649387 is 783946037.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783946037 = 7 ⋅111992291.

It is a cyclic number.

It is not a de Polignac number, because 730649387 - 2²⁰ = 729600811 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (730649317) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 28101887 + ... + 28101912.

It is an arithmetic number, because the mean of its divisors is an integer number (196713300).

Almost surely, 2^730649387 is an apocalyptic number.

730649387 is a deficient number, since it is larger than the sum of its proper divisors (56203813).

730649387 is a wasteful number, since it uses less digits than its factorization.

730649387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56203812.

The product of its (nonzero) digits is 762048, while the sum is 47.

The square root of 730649387 is about 27030.5269463990. The cubic root of 730649387 is about 900.6782488189.

The spelling of 730649387 in words is "seven hundred thirty million, six hundred forty-nine thousand, three hundred eighty-seven".