730766642 has 4 divisors (see below), whose sum is σ = 1096149966. Its totient is φ = 365383320.

The previous prime is 730766623. The next prime is 730766683. The reversal of 730766642 is 246667037.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 246667037 = 139 ⋅1774583.

It can be written as a sum of positive squares in only one way, i.e., 412536721 + 318229921 = 20311^2 + 17839^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 730766642.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182691659 + ... + 182691662.

Almost surely, 2^730766642 is an apocalyptic number.

730766642 is a deficient number, since it is larger than the sum of its proper divisors (365383324).

730766642 is a wasteful number, since it uses less digits than its factorization.

730766642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365383323.

The product of its (nonzero) digits is 254016, while the sum is 41.

The square root of 730766642 is about 27032.6957960171. The cubic root of 730766642 is about 900.7264266824.

The spelling of 730766642 in words is "seven hundred thirty million, seven hundred sixty-six thousand, six hundred forty-two".