34860721 has 4 divisors (see below), whose sum is σ = 39840832. Its totient is φ = 29880612.

The previous prime is 34860673. The next prime is 34860731. The reversal of 34860721 is 12706843.

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.

It is a cyclic number.

It is not a de Polignac number, because 34860721 - 2⁷ = 34860593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34860731) 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, 2490045 + ... + 2490058.

It is an arithmetic number, because the mean of its divisors is an integer number (9960208).

Almost surely, 2^34860721 is an apocalyptic number.

It is an amenable number.

34860721 is a deficient number, since it is larger than the sum of its proper divisors (4980111).

34860721 is an equidigital number, since it uses as much as digits as its factorization.

34860721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4980110.

The product of its (nonzero) digits is 8064, while the sum is 31.

The square root of 34860721 is about 5904.2968251943. The cubic root of 34860721 is about 326.6721581519.

The spelling of 34860721 in words is "thirty-four million, eight hundred sixty thousand, seven hundred twenty-one".