782116905 has 8 divisors (see below), whose sum is σ = 1251387072. Its totient is φ = 417129008.

The previous prime is 782116891. The next prime is 782116939. The reversal of 782116905 is 509611287.

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

It is a cyclic number.

It is not a de Polignac number, because 782116905 - 2⁴ = 782116889 is a prime.

It is a super-2 number, since 2×782116905² = 1223413706173558050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 26070549 + ... + 26070578.

It is an arithmetic number, because the mean of its divisors is an integer number (156423384).

Almost surely, 2^782116905 is an apocalyptic number.

It is an amenable number.

782116905 is a deficient number, since it is larger than the sum of its proper divisors (469270167).

782116905 is a wasteful number, since it uses less digits than its factorization.

782116905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52141135.

The product of its (nonzero) digits is 30240, while the sum is 39.

The square root of 782116905 is about 27966.3530872368. The cubic root of 782116905 is about 921.3484106353.

The spelling of 782116905 in words is "seven hundred eighty-two million, one hundred sixteen thousand, nine hundred five".