6936021 has 6 divisors (see below), whose sum is σ = 10018710. Its totient is φ = 4624008.

The previous prime is 6936001. The next prime is 6936023. The reversal of 6936021 is 1206396.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 6426225 + 509796 = 2535^2 + 714^2 .

It is not a de Polignac number, because 6936021 - 2⁵ = 6935989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6936023) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 385326 + ... + 385343.

It is an arithmetic number, because the mean of its divisors is an integer number (1669785).

Almost surely, 2^6936021 is an apocalyptic number.

It is an amenable number.

6936021 is a deficient number, since it is larger than the sum of its proper divisors (3082689).

6936021 is a wasteful number, since it uses less digits than its factorization.

6936021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 770675 (or 770672 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 6936021 is about 2633.6326623126. The cubic root of 6936021 is about 190.7085363871.

The spelling of 6936021 in words is "six million, nine hundred thirty-six thousand, twenty-one".