746821 has 4 divisors (see below), whose sum is σ = 770944. Its totient is φ = 722700.

The previous prime is 746813. The next prime is 746839. The reversal of 746821 is 128647.

746821 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 128647 = 103 ⋅1249.

It is a cyclic number.

It is not a de Polignac number, because 746821 - 2³ = 746813 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is a self number, because there is not a number n which added to its sum of digits gives 746821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (746891) 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, 12015 + ... + 12076.

It is an arithmetic number, because the mean of its divisors is an integer number (192736).

2⁷⁴⁶⁸²¹ is an apocalyptic number.

It is an amenable number.

746821 is a deficient number, since it is larger than the sum of its proper divisors (24123).

746821 is a wasteful number, since it uses less digits than its factorization.

746821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24122.

The product of its digits is 2688, while the sum is 28.

The square root of 746821 is about 864.1880582373. The cubic root of 746821 is about 90.7274783667.

The spelling of 746821 in words is "seven hundred forty-six thousand, eight hundred twenty-one".