6990057 has 10 divisors (see below), whose sum is σ = 10442058. Its totient is φ = 4659984.

The previous prime is 6990041. The next prime is 6990059. The reversal of 6990057 is 7500996.

It can be written as a sum of positive squares in only one way, i.e., 4247721 + 2742336 = 2061^2 + 1656^2 .

It is not a de Polignac number, because 6990057 - 2⁴ = 6990041 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6990059) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 43068 + ... + 43229.

Almost surely, 2^6990057 is an apocalyptic number.

It is an amenable number.

6990057 is a deficient number, since it is larger than the sum of its proper divisors (3452001).

6990057 is an equidigital number, since it uses as much as digits as its factorization.

6990057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86309 (or 86300 counting only the distinct ones).

The product of its (nonzero) digits is 17010, while the sum is 36.

The square root of 6990057 is about 2643.8715929485. The cubic root of 6990057 is about 191.2025026224.

The spelling of 6990057 in words is "six million, nine hundred ninety thousand, fifty-seven".