6900020 has 12 divisors (see below), whose sum is σ = 14490084. Its totient is φ = 2760000.

The previous prime is 6900001. The next prime is 6900053. The reversal of 6900020 is 200096.

It can be written as a sum of positive squares in 2 ways, for example, as 4301476 + 2598544 = 2074^2 + 1612^2 .

It is a super-2 number, since 2×6900020² = 95220552000800, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172481 + ... + 172520.

It is an arithmetic number, because the mean of its divisors is an integer number (1207507).

Almost surely, 2^6900020 is an apocalyptic number.

It is an amenable number.

6900020 is an abundant number, since it is smaller than the sum of its proper divisors (7590064).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6900020 is a wasteful number, since it uses less digits than its factorization.

6900020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345010 (or 345008 counting only the distinct ones).

The product of its (nonzero) digits is 108, while the sum is 17.

The square root of 6900020 is about 2626.7889142449. The cubic root of 6900020 is about 190.3780101361.

The spelling of 6900020 in words is "six million, nine hundred thousand, twenty".