700921 has 4 divisors (see below), whose sum is σ = 754852. Its totient is φ = 646992.

The previous prime is 700919. The next prime is 700933. The reversal of 700921 is 129007.

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 78400 + 622521 = 280^2 + 789^2 .

It is a cyclic number.

It is not a de Polignac number, because 700921 - 2¹ = 700919 is a prime.

It is a Duffinian number.

It is a nialpdrome in base 15.

It is not an unprimeable number, because it can be changed into a prime (706921) 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, 26946 + ... + 26971.

It is an arithmetic number, because the mean of its divisors is an integer number (188713).

2⁷⁰⁰⁹²¹ is an apocalyptic number.

It is an amenable number.

700921 is a deficient number, since it is larger than the sum of its proper divisors (53931).

700921 is a wasteful number, since it uses less digits than its factorization.

700921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53930.

The product of its (nonzero) digits is 126, while the sum is 19.

The square root of 700921 is about 837.2102483845. The cubic root of 700921 is about 88.8293240410.

Adding to 700921 its reverse (129007), we get a palindrome (829928).

The spelling of 700921 in words is "seven hundred thousand, nine hundred twenty-one".