3420487 has 4 divisors (see below), whose sum is σ = 3909136. Its totient is φ = 2931840.

The previous prime is 3420481. The next prime is 3420493. The reversal of 3420487 is 7840243.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7840243 = 1291 ⋅6073.

It is an interprime number because it is at equal distance from previous prime (3420481) and next prime (3420493).

It is a cyclic number.

It is not a de Polignac number, because 3420487 - 2¹¹ = 3418439 is a prime.

It is an Ulam number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3420481) 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, 244314 + ... + 244327.

It is an arithmetic number, because the mean of its divisors is an integer number (977284).

Almost surely, 2^3420487 is an apocalyptic number.

3420487 is a deficient number, since it is larger than the sum of its proper divisors (488649).

3420487 is an equidigital number, since it uses as much as digits as its factorization.

3420487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 488648.

The product of its (nonzero) digits is 5376, while the sum is 28.

The square root of 3420487 is about 1849.4558659238. The cubic root of 3420487 is about 150.6708765063.

The spelling of 3420487 in words is "three million, four hundred twenty thousand, four hundred eighty-seven".