730620901 has 4 divisors (see below), whose sum is σ = 730688652. Its totient is φ = 730553152.

The previous prime is 730620857. The next prime is 730620911. The reversal of 730620901 is 109026037.

It is a Cunningham number, because it is equal to 27030²+1.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 730404676 + 216225 = 27026^2 + 465^2 .

It is a cyclic number.

It is not a de Polignac number, because 730620901 - 2¹⁷ = 730489829 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 730620901.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730620911) 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, 13690 + ... + 40603.

It is an arithmetic number, because the mean of its divisors is an integer number (182672163).

Almost surely, 2^730620901 is an apocalyptic number.

It is an amenable number.

730620901 is a deficient number, since it is larger than the sum of its proper divisors (67751).

730620901 is a wasteful number, since it uses less digits than its factorization.

730620901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 67750.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 730620901 is about 27030.0000184980. Note that the first 4 decimals coincide. The cubic root of 730620901 is about 900.6665436817. Note that the first 3 decimals are identical.

Adding to 730620901 its reverse (109026037), we get a palindrome (839646938).

The spelling of 730620901 in words is "seven hundred thirty million, six hundred twenty thousand, nine hundred one".