721341074 has 8 divisors (see below), whose sum is σ = 1082398908. Its totient is φ = 360541440.

The previous prime is 721341073. The next prime is 721341079. The reversal of 721341074 is 470143127.

It can be written as a sum of positive squares in 2 ways, for example, as 696590449 + 24750625 = 26393^2 + 4975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (721341073) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 57407 + ... + 68834.

Almost surely, 2^721341074 is an apocalyptic number.

721341074 is a deficient number, since it is larger than the sum of its proper divisors (361057834).

721341074 is a wasteful number, since it uses less digits than its factorization.

721341074 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129100.

The product of its (nonzero) digits is 4704, while the sum is 29.

The square root of 721341074 is about 26857.7935430296. The cubic root of 721341074 is about 896.8370759685.

The spelling of 721341074 in words is "seven hundred twenty-one million, three hundred forty-one thousand, seventy-four".