7306207621 has 4 divisors (see below), whose sum is σ = 7306383852. Its totient is φ = 7306031392.

The previous prime is 7306207613. The next prime is 7306207633. The reversal of 7306207621 is 1267026037.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 3004684225 + 4301523396 = 54815^2 + 65586^2 .

It is a cyclic number.

It is not a de Polignac number, because 7306207621 - 2³ = 7306207613 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7306207661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 11955 + ... + 121471.

It is an arithmetic number, because the mean of its divisors is an integer number (1826595963).

Almost surely, 2^7306207621 is an apocalyptic number.

It is an amenable number.

7306207621 is a deficient number, since it is larger than the sum of its proper divisors (176231).

7306207621 is a wasteful number, since it uses less digits than its factorization.

7306207621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176230.

The product of its (nonzero) digits is 21168, while the sum is 34.

The square root of 7306207621 is about 85476.3570877936. The cubic root of 7306207621 is about 1940.4271228927.

The spelling of 7306207621 in words is "seven billion, three hundred six million, two hundred seven thousand, six hundred twenty-one".