745800778 has 16 divisors (see below), whose sum is σ = 1192359744. Its totient is φ = 348638400.

The previous prime is 745800763. The next prime is 745800779. The reversal of 745800778 is 877008547.

It is not an unprimeable number, because it can be changed into a prime (745800779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67500 + ... + 77767.

It is an arithmetic number, because the mean of its divisors is an integer number (74522484).

Almost surely, 2^745800778 is an apocalyptic number.

745800778 is a deficient number, since it is larger than the sum of its proper divisors (446558966).

745800778 is a wasteful number, since it uses less digits than its factorization.

745800778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145437.

The product of its (nonzero) digits is 439040, while the sum is 46.

The square root of 745800778 is about 27309.3533061477. The cubic root of 745800778 is about 906.8614568203.

The spelling of 745800778 in words is "seven hundred forty-five million, eight hundred thousand, seven hundred seventy-eight".