6921474 has 32 divisors (see below), whose sum is σ = 15912960. Its totient is φ = 1966032.

The previous prime is 6921451. The next prime is 6921493. The reversal of 6921474 is 4741296.

It is a happy number.

It is an Ulam number.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8997 + ... + 9735.

It is an arithmetic number, because the mean of its divisors is an integer number (497280).

Almost surely, 2^6921474 is an apocalyptic number.

6921474 is an abundant number, since it is smaller than the sum of its proper divisors (8991486).

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

6921474 is a wasteful number, since it uses less digits than its factorization.

6921474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 974.

The product of its digits is 12096, while the sum is 33.

The square root of 6921474 is about 2630.8694380375. The cubic root of 6921474 is about 190.5751179703.

The spelling of 6921474 in words is "six million, nine hundred twenty-one thousand, four hundred seventy-four".