747373321 has 8 divisors (see below), whose sum is σ = 752458824. Its totient is φ = 742296960.

The previous prime is 747373313. The next prime is 747373349. The reversal of 747373321 is 123373747.

It can be written as a sum of positive squares in 4 ways, for example, as 509134096 + 238239225 = 22564^2 + 15435^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 747373321 - 2³ = 747373313 is a prime.

It is a super-3 number, since 3×747373321³ (a number of 28 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747373301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 254755 + ... + 257671.

It is an arithmetic number, because the mean of its divisors is an integer number (94057353).

Almost surely, 2^747373321 is an apocalyptic number.

It is an amenable number.

747373321 is a deficient number, since it is larger than the sum of its proper divisors (5085503).

747373321 is a wasteful number, since it uses less digits than its factorization.

747373321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4571.

The product of its digits is 74088, while the sum is 37.

The square root of 747373321 is about 27338.1294349120. The cubic root of 747373321 is about 907.4983907669.

The spelling of 747373321 in words is "seven hundred forty-seven million, three hundred seventy-three thousand, three hundred twenty-one".