761648805 has 16 divisors (see below), whose sum is σ = 1354042560. Its totient is φ = 406212624.

The previous prime is 761648747. The next prime is 761648843. The reversal of 761648805 is 508846167.

It is a happy number.

It is not a de Polignac number, because 761648805 - 2⁸ = 761648549 is a prime.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2820787 + ... + 2821056.

It is an arithmetic number, because the mean of its divisors is an integer number (84627660).

Almost surely, 2^761648805 is an apocalyptic number.

It is an amenable number.

761648805 is a deficient number, since it is larger than the sum of its proper divisors (592393755).

761648805 is a wasteful number, since it uses less digits than its factorization.

761648805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5641857 (or 5641851 counting only the distinct ones).

The product of its (nonzero) digits is 322560, while the sum is 45.

The square root of 761648805 is about 27597.9855243096. The cubic root of 761648805 is about 913.2399922222.

The spelling of 761648805 in words is "seven hundred sixty-one million, six hundred forty-eight thousand, eight hundred five".