346452721 has 4 divisors (see below), whose sum is σ = 346490352. Its totient is φ = 346415092.

The previous prime is 346452713. The next prime is 346452737. The reversal of 346452721 is 127254643.

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 a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 127254643 = 53 ⋅2401031.

It is a cyclic number.

It is not a de Polignac number, because 346452721 - 2³ = 346452713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (346452761) 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, 5286 + ... + 26848.

It is an arithmetic number, because the mean of its divisors is an integer number (86622588).

Almost surely, 2^346452721 is an apocalyptic number.

It is an amenable number.

346452721 is a deficient number, since it is larger than the sum of its proper divisors (37631).

346452721 is a wasteful number, since it uses less digits than its factorization.

346452721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37630.

The product of its digits is 40320, while the sum is 34.

The square root of 346452721 is about 18613.2404755325. The cubic root of 346452721 is about 702.3409524144.

The spelling of 346452721 in words is "three hundred forty-six million, four hundred fifty-two thousand, seven hundred twenty-one".