6698478 has 32 divisors (see below), whose sum is σ = 14009760. Its totient is φ = 2132480.

The previous prime is 6698477. The next prime is 6698491. The reversal of 6698478 is 8748966.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6698477) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 23698 + ... + 23978.

It is an arithmetic number, because the mean of its divisors is an integer number (437805).

Almost surely, 2^6698478 is an apocalyptic number.

6698478 is an abundant number, since it is smaller than the sum of its proper divisors (7311282).

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

6698478 is a wasteful number, since it uses less digits than its factorization.

6698478 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452.

The product of its digits is 580608, while the sum is 48.

The square root of 6698478 is about 2588.1418044613. The cubic root of 6698478 is about 188.5060869965.

The spelling of 6698478 in words is "six million, six hundred ninety-eight thousand, four hundred seventy-eight".