264709978 has 16 divisors (see below), whose sum is σ = 437554656. Its totient is φ = 119332080.

The previous prime is 264709943. The next prime is 264709979. The reversal of 264709978 is 879907462.

264709978 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (264709979) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 117268 + ... + 119503.

It is an arithmetic number, because the mean of its divisors is an integer number (27347166).

Almost surely, 2^264709978 is an apocalyptic number.

264709978 is a deficient number, since it is larger than the sum of its proper divisors (172844678).

264709978 is a wasteful number, since it uses less digits than its factorization.

264709978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236829.

The product of its (nonzero) digits is 1524096, while the sum is 52.

The square root of 264709978 is about 16269.9102025795. The cubic root of 264709978 is about 642.0814216599.

The spelling of 264709978 in words is "two hundred sixty-four million, seven hundred nine thousand, nine hundred seventy-eight".