713780781 has 16 divisors (see below), whose sum is σ = 1134956544. Its totient is φ = 390140784.

The previous prime is 713780737. The next prime is 713780789. The reversal of 713780781 is 187087317.

It is not a de Polignac number, because 713780781 - 2⁹ = 713780269 is a prime.

It is a super-2 number, since 2×713780781² = 1018966006649939922, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (713780789) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 738421 + ... + 739386.

It is an arithmetic number, because the mean of its divisors is an integer number (70934784).

Almost surely, 2^713780781 is an apocalyptic number.

It is an amenable number.

713780781 is a deficient number, since it is larger than the sum of its proper divisors (421175763).

713780781 is a wasteful number, since it uses less digits than its factorization.

713780781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1477840.

The product of its (nonzero) digits is 65856, while the sum is 42.

The square root of 713780781 is about 26716.6760844234. The cubic root of 713780781 is about 893.6928500076.

The spelling of 713780781 in words is "seven hundred thirteen million, seven hundred eighty thousand, seven hundred eighty-one".