719402065 has 4 divisors (see below), whose sum is σ = 863282484. Its totient is φ = 575521648.

The previous prime is 719402059. The next prime is 719402077. The reversal of 719402065 is 560204917.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 113060689 + 606341376 = 10633^2 + 24624^2 .

It is a cyclic number.

It is not a de Polignac number, because 719402065 - 2²⁷ = 585184337 is a prime.

It is a super-2 number, since 2×719402065² = 1035078662252528450, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 719402065.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71940202 + ... + 71940211.

It is an arithmetic number, because the mean of its divisors is an integer number (215820621).

Almost surely, 2^719402065 is an apocalyptic number.

It is an amenable number.

719402065 is a deficient number, since it is larger than the sum of its proper divisors (143880419).

719402065 is a wasteful number, since it uses less digits than its factorization.

719402065 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143880418.

The product of its (nonzero) digits is 15120, while the sum is 34.

The square root of 719402065 is about 26821.6715549199. The cubic root of 719402065 is about 896.0327705283.

The spelling of 719402065 in words is "seven hundred nineteen million, four hundred two thousand, sixty-five".