3454721 has 4 divisors (see below), whose sum is σ = 3506352. Its totient is φ = 3403092.

The previous prime is 3454697. The next prime is 3454739. The reversal of 3454721 is 1274543.

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: 1274543 = 191 ⋅6673.

It is a cyclic number.

It is not a de Polignac number, because 3454721 - 2¹⁸ = 3192577 is a prime.

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

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3454771) 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, 25715 + ... + 25848.

It is an arithmetic number, because the mean of its divisors is an integer number (876588).

Almost surely, 2^3454721 is an apocalyptic number.

It is an amenable number.

3454721 is a deficient number, since it is larger than the sum of its proper divisors (51631).

3454721 is an equidigital number, since it uses as much as digits as its factorization.

3454721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51630.

The product of its digits is 3360, while the sum is 26.

The square root of 3454721 is about 1858.6879781179. The cubic root of 3454721 is about 151.1718727715.

The spelling of 3454721 in words is "three million, four hundred fifty-four thousand, seven hundred twenty-one".