721081714 has 8 divisors (see below), whose sum is σ = 1083700188. Its totient is φ = 359848320.

The previous prime is 721081709. The next prime is 721081721. The reversal of 721081714 is 417180127.

It can be written as a sum of positive squares in 2 ways, for example, as 708358225 + 12723489 = 26615^2 + 3567^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 344967 + ... + 347050.

Almost surely, 2^721081714 is an apocalyptic number.

721081714 is a deficient number, since it is larger than the sum of its proper divisors (362618474).

721081714 is a wasteful number, since it uses less digits than its factorization.

721081714 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 692540.

The product of its (nonzero) digits is 3136, while the sum is 31.

The square root of 721081714 is about 26852.9647152786. The cubic root of 721081714 is about 896.7295764070.

The spelling of 721081714 in words is "seven hundred twenty-one million, eighty-one thousand, seven hundred fourteen".