775140871 has 16 divisors (see below), whose sum is σ = 822757824. Its totient is φ = 728792064.

The previous prime is 775140869. The next prime is 775140881. The reversal of 775140871 is 178041577.

It is a cyclic number.

It is not a de Polignac number, because 775140871 - 2¹ = 775140869 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (775140851) 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, 349161 + ... + 351373.

It is an arithmetic number, because the mean of its divisors is an integer number (51422364).

Almost surely, 2^775140871 is an apocalyptic number.

775140871 is a deficient number, since it is larger than the sum of its proper divisors (47616953).

775140871 is a wasteful number, since it uses less digits than its factorization.

775140871 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2490.

The product of its (nonzero) digits is 54880, while the sum is 40.

The square root of 775140871 is about 27841.3518170365. The cubic root of 775140871 is about 918.6009259973.

The spelling of 775140871 in words is "seven hundred seventy-five million, one hundred forty thousand, eight hundred seventy-one".