6990471 has 6 divisors (see below), whose sum is σ = 10097360. Its totient is φ = 4660308.

The previous prime is 6990463. The next prime is 6990493. The reversal of 6990471 is 1740996.

It is not a de Polignac number, because 6990471 - 2³ = 6990463 is a prime.

It is a super-3 number, since 3×6990471³ (a number of 22 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6990371) 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, 388351 + ... + 388368.

Almost surely, 2^6990471 is an apocalyptic number.

6990471 is a deficient number, since it is larger than the sum of its proper divisors (3106889).

6990471 is a wasteful number, since it uses less digits than its factorization.

6990471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 776725 (or 776722 counting only the distinct ones).

The product of its (nonzero) digits is 13608, while the sum is 36.

The square root of 6990471 is about 2643.9498860606. The cubic root of 6990471 is about 191.2062773305.

The spelling of 6990471 in words is "six million, nine hundred ninety thousand, four hundred seventy-one".