746705321 has 4 divisors (see below), whose sum is σ = 754403412. Its totient is φ = 739007232.

The previous prime is 746705317. The next prime is 746705353. The reversal of 746705321 is 123507647.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 123507647 = 3347 ⋅36901.

It can be written as a sum of positive squares in 2 ways, for example, as 604618921 + 142086400 = 24589^2 + 11920^2 .

It is a cyclic number.

It is not a de Polignac number, because 746705321 - 2² = 746705317 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (746705381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3848900 + ... + 3849093.

It is an arithmetic number, because the mean of its divisors is an integer number (188600853).

Almost surely, 2^746705321 is an apocalyptic number.

It is an amenable number.

746705321 is a deficient number, since it is larger than the sum of its proper divisors (7698091).

746705321 is an equidigital number, since it uses as much as digits as its factorization.

746705321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7698090.

The product of its (nonzero) digits is 35280, while the sum is 35.

The square root of 746705321 is about 27325.9093352810. The cubic root of 746705321 is about 907.2279370739.

The spelling of 746705321 in words is "seven hundred forty-six million, seven hundred five thousand, three hundred twenty-one".