734521 has 8 divisors (see below), whose sum is σ = 786080. Its totient is φ = 684288.

The previous prime is 734497. The next prime is 734537. The reversal of 734521 is 125437.

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 734521 - 2¹⁹ = 210233 is a prime.

It is a Duffinian number.

734521 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 734492 and 734501.

It is not an unprimeable number, because it can be changed into a prime (734021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 985 + ... + 1561.

It is an arithmetic number, because the mean of its divisors is an integer number (98260).

2⁷³⁴⁵²¹ is an apocalyptic number.

It is an amenable number.

734521 is a deficient number, since it is larger than the sum of its proper divisors (51559).

734521 is a wasteful number, since it uses less digits than its factorization.

734521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 663.

The product of its digits is 840, while the sum is 22.

The square root of 734521 is about 857.0420059717. The cubic root of 734521 is about 90.2266304851.

Adding to 734521 its reverse (125437), we get a palindrome (859958).

It can be divided in two parts, 73 and 4521, that multiplied together give a palindrome (330033).

The spelling of 734521 in words is "seven hundred thirty-four thousand, five hundred twenty-one".