3478457 has 4 divisors (see below), whose sum is σ = 3493620. Its totient is φ = 3463296.

The previous prime is 3478427. The next prime is 3478459. The reversal of 3478457 is 7548743.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7548743 = 107 ⋅70549.

It can be written as a sum of positive squares in 2 ways, for example, as 1893376 + 1585081 = 1376^2 + 1259^2 .

It is a cyclic number.

It is not a de Polignac number, because 3478457 - 2⁸ = 3478201 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3478457.

It is not an unprimeable number, because it can be changed into a prime (3478459) 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, 7232 + ... + 7697.

It is an arithmetic number, because the mean of its divisors is an integer number (873405).

Almost surely, 2^3478457 is an apocalyptic number.

It is an amenable number.

3478457 is a deficient number, since it is larger than the sum of its proper divisors (15163).

3478457 is a wasteful number, since it uses less digits than its factorization.

3478457 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15162.

The product of its digits is 94080, while the sum is 38.

The square root of 3478457 is about 1865.0621973543. The cubic root of 3478457 is about 151.5172966197.

The spelling of 3478457 in words is "three million, four hundred seventy-eight thousand, four hundred fifty-seven".