3423657 has 4 divisors (see below), whose sum is σ = 4564880. Its totient is φ = 2282436.

The previous prime is 3423643. The next prime is 3423659. The reversal of 3423657 is 7563243.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 7563243 = 3 ⋅2521081.

It is not a de Polignac number, because 3423657 - 2⁷ = 3423529 is a prime.

It is a D-number.

It is a Duffinian number.

3423657 is a lucky number.

It is not an unprimeable number, because it can be changed into a prime (3423659) 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, 570607 + ... + 570612.

It is an arithmetic number, because the mean of its divisors is an integer number (1141220).

Almost surely, 2^3423657 is an apocalyptic number.

It is an amenable number.

3423657 is a deficient number, since it is larger than the sum of its proper divisors (1141223).

3423657 is a wasteful number, since it uses less digits than its factorization.

3423657 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1141222.

The product of its digits is 15120, while the sum is 30.

The square root of 3423657 is about 1850.3126762793. The cubic root of 3423657 is about 150.7174078145.

It can be divided in two parts, 3 and 423657, that added together give a triangular number (423660 = T₉₂₀).

The spelling of 3423657 in words is "three million, four hundred twenty-three thousand, six hundred fifty-seven".