3478691 has 4 divisors (see below), whose sum is σ = 3661800. Its totient is φ = 3295584.

The previous prime is 3478687. The next prime is 3478697. The reversal of 3478691 is 1968743.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1968743 = 7 ⋅281249.

It is a cyclic number.

It is not a de Polignac number, because 3478691 - 2² = 3478687 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3478697) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 91526 + ... + 91563.

It is an arithmetic number, because the mean of its divisors is an integer number (915450).

Almost surely, 2^3478691 is an apocalyptic number.

3478691 is a deficient number, since it is larger than the sum of its proper divisors (183109).

3478691 is a wasteful number, since it uses less digits than its factorization.

3478691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 183108.

The product of its digits is 36288, while the sum is 38.

The square root of 3478691 is about 1865.1249287916. The cubic root of 3478691 is about 151.5206941273.

The spelling of 3478691 in words is "three million, four hundred seventy-eight thousand, six hundred ninety-one".