701921 has 6 divisors (see below), whose sum is σ = 771666. Its totient is φ = 638000.

The previous prime is 701903. The next prime is 701951. The reversal of 701921 is 129107.

It can be written as a sum of positive squares in only one way, i.e., 698896 + 3025 = 836^2 + 55^2 .

It is not a de Polignac number, because 701921 - 2¹⁰ = 700897 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 701893 and 701902.

It is not an unprimeable number, because it can be changed into a prime (701951) 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 5 ways as a sum of consecutive naturals, for example, 2780 + ... + 3021.

It is an arithmetic number, because the mean of its divisors is an integer number (128611).

2⁷⁰¹⁹²¹ is an apocalyptic number.

It is an amenable number.

701921 is a deficient number, since it is larger than the sum of its proper divisors (69745).

701921 is a wasteful number, since it uses less digits than its factorization.

701921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5823 (or 5812 counting only the distinct ones).

The product of its (nonzero) digits is 126, while the sum is 20.

The square root of 701921 is about 837.8072570705. The cubic root of 701921 is about 88.8715480641.

It can be divided in two parts, 70 and 1921, that added together give a palindrome (1991).

The spelling of 701921 in words is "seven hundred one thousand, nine hundred twenty-one".