775478097 has 16 divisors (see below), whose sum is σ = 1198807680. Its totient is φ = 494507376.

The previous prime is 775478087. The next prime is 775478111. The reversal of 775478097 is 790874577.

775478097 is a `hidden beast` number, since 7 + 7 + 547 + 8 + 0 + 97 = 666.

It is not a de Polignac number, because 775478097 - 2⁸ = 775477841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (775478057) 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, 623758 + ... + 624999.

It is an arithmetic number, because the mean of its divisors is an integer number (74925480).

Almost surely, 2^775478097 is an apocalyptic number.

It is an amenable number.

775478097 is a deficient number, since it is larger than the sum of its proper divisors (423329583).

775478097 is a wasteful number, since it uses less digits than its factorization.

775478097 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1248789 (or 1248783 counting only the distinct ones).

The product of its (nonzero) digits is 3457440, while the sum is 54.

The square root of 775478097 is about 27847.4073658572. The cubic root of 775478097 is about 918.7341195089.

The spelling of 775478097 in words is "seven hundred seventy-five million, four hundred seventy-eight thousand, ninety-seven".