77320270 has 8 divisors (see below), whose sum is σ = 139176504. Its totient is φ = 30928104.

The previous prime is 77320237. The next prime is 77320277. The reversal of 77320270 is 7202377.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (77320277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3866004 + ... + 3866023.

It is an arithmetic number, because the mean of its divisors is an integer number (17397063).

Almost surely, 2^77320270 is an apocalyptic number.

77320270 is a deficient number, since it is larger than the sum of its proper divisors (61856234).

77320270 is a wasteful number, since it uses less digits than its factorization.

77320270 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7732034.

The product of its (nonzero) digits is 4116, while the sum is 28.

The square root of 77320270 is about 8793.1945275878. The cubic root of 77320270 is about 426.0211110200.

The spelling of 77320270 in words is "seventy-seven million, three hundred twenty thousand, two hundred seventy".